I haven't spent much time in the on topic or other discussion forums, but you have a good question here and that seems like a good place to start!
To start with, so I don't mistakenly get your hopes up, I really don't know where you would host that kind of gallery. I know there are sites where people post their images to look at for free, but I'm guessing that's not something you are interested in at the moment. Perhaps something like wordpress.com or that one with an 'i' name that I now cannot think of the name of, would allow you to create/host your own page with links for payment and such. That's the only advice I can give there.
Now to my opinions on the subject.
I was raised to think that sex or any form of intimacy between two(or more) consenting individuals of appropriate age was acceptable. It's nobody else's business what people want to do with their chosen partner, said my dad to 12-year-old me after passing on a comment about lesbians I had heard from a school friend. From that day forward, I didn't give a damn what other people liked. Unless they liked me, and well, then, poor little shy, geeky, teenage me would turn bright red and go hastily the other way. Sorry, getting to the point, I swear.
If you want to make your living on your art, and your specialty happens to be pornographic images, then more power to you. I read a book once about a woman who designed stained glass art, and would hide erotic images in the midst of something entirely innocent, like a woman bound to a bed in the image of a mermaid. It wasn't a picture book, so I have no idea how she did it, but the idea is fascinating. Websites, actors, and producers make millions, if not billions of dollars every year off of pornographic videos and photos. Toy and lingerie stores make still more money for the sex industry. I see no reason why hand- or computer-drawn still images should not join the array of products available for purchase. Besides, the drawing scene from Titanic and the raves I've heard about it tell me your work would probably be well received.
If you're worried about what people may thing of your choice of career, then just tell them you're an artist and you specialize in drawing people. Or, and I know this is much-flaunted advice, don't worry about what other people think. You have a talent for something, and you're never going to make everyone happy. It simply won't happen. Be proud of having a career based sheerly on your own talent to do something unique and inspiring. Far better to be self-dependent and satisfied with what you do than shunted in to something that, while perhaps easier to share with friends and family, could leave you feeling unaccomplished, or depressed, or some other negative emotion.
Alibi: If you draw child porn, rape, or other illegal and really immoral things, I would totally blacklist you. However, I don't think that's your goal, so I see absolutely no moral or ethical dilemma with trying to make some money with your artwork. To my knowledge, there is nothing illegal about foot or tickling fetishes! Heck, I think a minor could just about have a moral tickling fetish. (that's a joke, don't get any ideas!)