This.

I mean, sure, I was "out" in college, where no one cared either way, but then I moved back home and being "out" to my parents just was not going to happen, and everyone I get to know requires a decision of "If I tell you this, will you tell my parents? Or someone who might take away my job?"

It wasn't like I did anything specifically to end up "back in the closet", I just moved!