I'm super happy. Maybe I'm just easily amused but I've never really felt the need or desire to try drugs/drink/smoke/whatever, just not interested and the consequences suck. Besides, they're all really expensive for such a short term benefit. Oh yeah, and enjoying casual sex doesn't mean you can't seek romance too, they aren't mutually exclusive. As for "how" I can enjoy being like this, well, people are just have different values and means of obtaining happiness I guess. I could just as easily ask how you enjoy being how you are. The idea of enjoying paying money to inhale smoke or be turned into an idiot is just as alien to me as how I enjoy living a boring life is to you.
TLDR: People are different. Not much I can really be say on the topic beyond that
TLDR: People are different. Not much I can really be say on the topic beyond that