Construction costs are currently skyrocketing

You can't just wait it out. Even if gas still came from Russia and cost 6 cents/kWh. By 2027, that would have doubled due to the new CO2 price. Now amounts around 20-25 cents/kWh are realistic. And CO2 prices also affect fuel. Anything under 2 EUR/liter is then no longer realistic.

The 80-year-old grandma might not be meant by this. But how is she supposed to heat her 250m² house then?

It’s bitter, but those who own property have to take care of it themselves. Taxpayers, meaning all tenants, can't pay for renovations because people haven't done anything to their houses for 50 years. That would be downright absurd. I had to meet the GEG2020 requirements, so I already built quite expensively... and now I’m supposed to also pay for others' renovations because they haven't built up any reserves for 50 years?

Not possible.

And about the vacation... I have often driven 1,100 km in one go, with only a short 5-minute refueling break. That is neither healthy for the body nor does it contribute to safety on the roads. In Sweden, on the last 100 km, my eyes almost closed. I would no longer do that today, after a knee operation, for which these rushed trips were probably partly responsible. Two breaks of 30-45 minutes to move around a bit, eat something... that is always possible. That must always be possible.

You can explain to the uncle that an electric car consumes about 15-20 kWh per 100 km, and an X7 probably around 25 kWh. A comparable diesel, on the other hand, consumes at least 5 liters in the most economical operation, and the X7 rather 7 liters per 100 km. One liter of diesel contains about 10 kWh, which corresponds to a demand of 50-70 kWh per 100 km.

I find the comparison much nicer and more striking that an electric car consumes about as much electricity per 100 km as the production and provision of fuel for an internal combustion engine for the same 100 km alone!

I find the comparison much nicer and more striking that an electric car consumes about as much electricity per 100km as the production and provision of fuel for an internal combustion engine for the same 100km alone!

But the electricity does not exactly fall from the sky either. And all the overhead lines, substations, power cables, etc. were not present at the Big Bang either; they had to be produced, built, and laid.

Copper is a fairly "dirty" raw material in terms of its extraction and processing. Entire areas of land are dug up in Australia for this. Nobody cares though, because only the indigenous people live there and no Lützerath residents ;)

Now, electricity doesn't just fall from the sky either. And all the overhead lines, substations, power cables, etc. were not present at the Big Bang either; they had to be produced, built, and laid. Copper is quite a "dirty" raw material when it comes to its extraction and processing. Entire areas of land are dug up in Australia for this. Nobody cares though because only the indigenous people live there and no Lützerath residents ;)

What does that have to do with my statement? The charging current for cars is conducted through the same lines, power cables, etc. as the electricity used for the production and provision of fuel. ;-)

Even if gas still came from Russia and cost 6 cents/kWh. By 2027 that would have doubled due to the new CO2 price. Now amounts around 20-25 cents/kWh are realistic

The CO2 price or BEHG surcharge on natural gas is currently set at 55-65 € / t for 2027 after the postponement to 2023. That corresponds to about 1 ct/kWh natural gas. The EU-wide agreement envisions 50 € / t CO2 until 2030, so nothing is in sight from this side either.
How this drives the price to 20 ct/kWh I do not yet see – the influence of war, economic upheavals, and other price drivers is (as we saw last year) clearly greater than the CO2 tax.
Yes, the diesel price will also rise because of this, but here it is "only" 17 ct/l in 2027. Here too, stock market prices fluctuate much more strongly and ultimately also influence the electricity price.

The Greens would certainly like to push the price higher, but currently I see neither political support from other parties nor public willingness to bear that.
Since the idea of the quasi-ban on new gas heating systems and the combustion engine phase-out by 2035, the Greens probably no longer see it as so important because the regulation is not implemented through price pressure but by ordinance.

Whether the CO2 tax is sensible or socially just is another matter. But an apocalypse due to the CO2 taxation is not in sight, and the pressure to switch to supposedly ecological electric cars and heat pumps is manageable – at least from an economic perspective – hence also the law.

My father, on the other hand, is different again. He now believes that climate change exists, also that it is man-made or at least strongly influenced, but he thinks it can no longer be stopped anyway and therefore one should rather think of methods to live with it.

The aspect is just far too shortchanged. Currently, every deviation from normal weather is attributed to climate change. But we are still miles away from 1.5 or 2 degrees. CO2 reductions are not a free pass to rebuild everything in the Ahr valley. We will have to adapt massively, even if, surprisingly, the whole world joins in reducing CO2.