Construction costs are currently skyrocketing

From when on is "panic" appropriate? From 10 million deaths? From 100 million? From one billion? These are the orders of magnitude we're talking about when we speak of 2, 3, or 4 degrees of warming.
That little bit of water in a first-world country a few weeks ago cost 180 lives. And to speak with the words of a good journalist: "No fear. Climate change is coming to you too!"
Whether you believe it or not – we have it in our hands, and you too have to make a decision at some point.
Edit: You mentioned that part as well: Of course, technically everything is no problem at all. We have to build a lot of wind and photovoltaics, yes. But that can be done. You don’t even need more money than is currently already being thrown away on coal and nuclear. In the end, it would be cheaper for everyone. That is rather bad for some influential people, which is why the Springer press is doing a lot of agitation against it. And unfortunately, many fall for it.

What does one want to achieve? If one wants to protect people from climate change (THAT is actually what "climate protection" means), it can only be done through bans, price signals, etc. Shifting this to the level of the market and thus to the responsibility of the individual does not work and is a lobbying trick by those corporations that will end up on the losing side.

Nevertheless, the train regarding the 1.5-degree target has left the station, and the 2-degree target will most likely also be missed. The consequences will be very unpleasant. They become even more unpleasant with every additional tenth of a degree, which is why climate protection is warranted even if the optimum (<1.5 degrees) is not achieved. Then the question arises again: how exactly? A big wheel has to be turned from above, otherwise it won't work.

One can also give up and come to terms with the consequences – however, I claim that 95% of all people lack the imagination to really consider the consequences. Otherwise, there would be less discussion and more action.

No, a basement is not planned. The biggest question is whether the 2500 for the square meter of living space is still current. Probably very location-dependent though…

Climate protection starts small. It doesn't require zero-energy houses or a ban on oil heating systems.

I recently ordered an important spare part. The factory is 20 km from me. I could have picked up the part there, but that was not possible for internal corporate reasons. The main spare parts warehouse is in France. However, the part was not in stock there. It was in Finland. Since the order was placed with overnight express at the highest urgency level, a special transport was ordered from Finland, and the part arrived three days later.
2,000 km driven around for no reason. By the way, the part was about the size of a cigarette pack.

The paper recycling bin is full. Due to corona, more orders are being made online, leaving some boxes. I carefully tie them together and place them next to the paper bin to be collected. As a matter of principle, the waste collector does not take loose boxes. So, I have to drive 40 km to the recycling center with my car and dispose of them there. 80 km driven for nothing.

When apples from New Zealand are flown in by plane and sold at Edeka here in mid-September, while our local apple farmers are complaining about price dumping, then something is clearly wrong. But no one forbids that, not even a Green party member. They even buy such things!

Many things are going wrong here, but not the small oil heating system of an older house.

How about 10 million oil heating systems?

And yes, of course your other examples are also worth mentioning and avoiding.

Edit: Sorry for getting off topic again...
How about this: Does anyone have current numbers for construction loan interest rates? Are they going up again already?

So I have to drive by car to the recycling center 40 km away and then dispose of it there. 80 km driven for nothing.

You have to drive 40 km to drop off cardboard? :eek: Where do you live???? :D:p:D:p