I'd love to make XXX videogames. There aren't many serious players in that space, and I'd love to go after it. I can't do it alone, though, I need artists and a couple other capabilities besides software development. When I pitch the idea to people I'd like to work with on this, they don't want to participate in that space. So yes, there's definitely a stigma for a lot of people.
I've done a good amount of sex things in different venues ranging from phone sex systems to phone dating systems to sex robots in Second Life, so I've long ago lost my aversion to such things. But it surprised me how many people seem to be scared of participating in the industry.
It's easier to make high quality content now than ever before, and it's only going to get better from here.