There are plenty of cheap buildings further away where you can have space to tinker and spread out, which is fun. The city is for socializing and 20 square meters are more than enough. Splitting time between both (city on weekend and farm on weekdays when everyone is busy) is pretty ideal for me.
Edit: Hobbies certainly aren't practical, but there is often a practical aspect associated with them used as a justification, e.g. for having fresher vegetables or unusual varieties not sold in a supermarket/co-op. I bring up cost with woodworking as it's a notoriously expensive hobby, especially second-order costs such as the decision to own a single-family home or a larger vehicle.
There are things worth far more than money.
Next is this :
> DIY furniture is not cheap compared with mass-produced even without considering time,
Do you honestly believe that "mass-produced" furniture is anywhere near the same quality as DIY?
Ikea - Where you can buy a bookshelf which will not be able to hold the weight of books.
DiY - Where you use dado's and plywood and end up with bookshelf's which can easily hold a few hundred pounds.