How much repayment is advisable for how much net income?

Yes, it is precisely the operating costs that make it economical. I had my first service this week (€157). When I consider that I have sunk almost €5000 into repairs for my 10-year-old diesel over the last 5 years. It is a Peugeot Ion (so without battery rental). With everything included, the car costs me €75 per month excluding acquisition costs, and I have both a Tank&Rast and an Ikea with free charging stations on my way to work (still).

Do you all drive cars to SAVE MONEY? Am I the only one who actually associates fun with it?

I actually wanted to get a 5-year-old 7 Series BMW, but then common sense prevailed.

Buy a moped. That’s typical German thinking. Show me your car and I’ll show you who you are.

You can also walk 6 km in a suit. I’ll jog 6 km for you in 30 minutes

That sounds good.
How long do you need for the distance with 75kg of luggage?

Do you all drive just to SAVE money? Am I the only one who actually associates fun with it?

I think driving is okay, I don't have to be crazy about it. In the morning rush hour, the pleasure is very limited.

Especially if you enjoy driving, an electric car is definitely the right choice. I would really like to have one
But it sounds here again as if you can't transport children and crates of water by bike. There are both cargo bikes and trailers for things, children, or dogs. Apart from child seats, of course. Compared to a car, even the most amazing cargo bike is very affordable. Of course, you don't have to if you don't want to, but when I hear what supposedly doesn't work...

Do you all drive cars to SAVE? Am I the only one who actually associates fun with it?

I enjoy driving! Especially when I can drive fast. However, it doesn't go as far as me driving "just for fun". That wouldn't even occur to me. And if I had to squeeze myself into the car every morning and join the rush hour traffic, it would no longer be fun.