Comment by fragmede

Because you can build things like the house we're commenting on. If that's not your thing that's totally fine, but sometimes people want to spend way their hard earned money on adapting their living situation to suit their desires.

If I'm going to sink that kind of time/money/effort into building a thing, I don't want a landlord to be able to come in and take it away from me with some legal loophole or by raising my rent.