Some people can be reasoned with if your nice about it and good at debating:
(Some of those comments are arranged out of posting order)
However, how do you deal with people like this:
I think they are beyond reasoning with after all the attacks they've made but I could be wrong.
This is how I answered my own question:
It helped me to look at all the positive comments my gallery does have. Also, I realized that I value the opinions of those close to me more then some random person on the internet: I talked to a good IRL friend of mine who isn't an ABDL, but is accepting of me being one and he didn't see a problem. That meant a lot to me.