Whats the point of doing kata?

Hello, I'm wondering what the point of doing kata's? I understand its to simulate an imaginary opponent so you can use techniques you probably wont ever use in positions you'll probably never be in but... It just seems more reasonable to learn combinations of a few moves each rather than 30 something techniques long forms that require you to have a room at least 50ft by 50ft with nothing blocking you (which admittedly is pretty hard to find in my house)... It makes home practice feel pretty dreadful for me "Okay we're gonna go here... Nope a wall *backs away a few feet* Okay... No the wall hasn't moved yet..."

Whats the point?