it just doesn't make much sense, so someone who wishes they weren't black is gonna grow an afro, something that'll make em stand out and draw attention to their blackness?
Ah, I see where the confusion is.
Some people think that they are special snowflakes. They know that they are black but they're not like "those other black people". They always complaining about how other black people are thugs and hoes. They are usually engrossed in another culture, Japanese for example.
Like I said to someone else, a lot of white people think that afros are cool and fascinating. I've had plenty of white people tell me, " if I was black I'd grow a fro" or " You should wear an afro."
Plus, it's just something that happens when you want to grow out your hair, and while some black men do perm their hair, if your broke or lazy and don't want to spend money getting your hair don't and don't know how to cut your own hair, you get a fro. It's the simplest, cheapest thing to do.