I dont get it, why exactly is it wrong to live like this?

Would you feel any shame bringing someone into that room?

would only bring your mom over desu

Bugs, smell, virus breeding grounds, it looks gross, it feels gross, you can't walk anywhere, no one has any place to sit with space, rats, a reflection of your mental state, the list goes on and on.

early death, creates pest problems for other people and you will never truly be happy.

Also beweg dein scheiss Arsch raus und raeum dein Zimmer auf