My wife used to swallow, mostly because to do otherwise was messy and if she swallowed fast enough, she didn't have to taste very much of it. She would complain that semen made her mouth go numb, no matter who it was.
But a few years ago, several times in a row, swallowing made her stomach upset and she would throw up. Since hear my wife retch in the bathroom is not a fetish of mine, she stopped swallowing and started 'pulling out' when she noticed I was getting ready to cum. It's usually ends up on my stomach, though sometimes she's not fast enough and some ends up in her mouth. I'd love it if she started swallowing again, but we'd have to figure out if something would make her not throw up, like medicine. It also doesn't help that semen is one of the three bodily fluids that she doesn't like on her own skin, the other two are sweat and spit, unless she's really horny.
What's sad is that she actually enjoys giving blowjobs and usually they make her horny. Not horny enough to take a facial, but horny.
