"I chose to be gay"

Yet she is legally married and nobody sees it as weird.

And it's not the only case. Religion just makes up stupid excuses for stupid arguments that shouldn't even have to exist on the first place.

Well, it's less that they make them up, and more that they let their crazy reasoning (because seriously, every religion looks strange if you're not a practitioner) affect those who don't practice their religion. Considering the US has been around for a good 250 years, we really should have actually implemented the whole "separation of church (beliefs) and state" thing by now.