I am not here to shit on D&D. If you’re having fun, then it’s the right game for you and your table.
D&D is a rules medium game that is based around combat, but isn’t great at combat being balanced at combat where every PC is basically immortal. The game itself doesn’t really set a tone, which makes different people have different expectations of what the game “should” be.
Because of it not-quite-being-great at anything, people tend to want to push limits, or add homebrew.
Edit: A rules lite system with a set tone will also prevent this level of silly, if that’s not what you want