Why would casual sex be bad?

I have a lot of sexual questions today… This is why school is important. It stifles these questions completely because I’m too busy worrying about tariffs and George Washington and trigonometry.

Okay, on my last question I asked about pre-marital sex. A lot of people were talking about one night stands, and I want to know what’s bad about them.

—I’m not doing sex (I think I’m too young, personally), but I like discussions about just about anything, so don’t worry.—