Yes, it's crowded, and yes, sometimes you might get groped (have not personally experienced it though), but have you seen their awesome signs?!
If you are a fat penguin you might get stuck in the door.
Look! It's a giant hand!
Don't get drunk and jump in front of a moving train!
The buses here are much cuter as well.
Ok, I just wrote this post to showcase the funny signs. I wish I took more pictures of them. The end.