2 - You can do what you want, when you want.
3 - You don't have to worry about pleasing people, or not offending them.
4 - You don't have to attend any boring social functions.
5 - You'll save a ton of money on drinks, restaurants, and travel.
6 - You could learn a lot more, if that's what you choose to do with all your extra free time.
There are downsides too, of course, but this thread is about the upsides.