It's hard to ignore negativity when it's coming from people close to you. My approach in that situation is to confront it directly. I had occasion to do just that with my husband today. He was being kind of nasty about my etsy store and the amount of time I spend on it. I just told him this is important to me and he doesn't have to like what I'm doing, but his comments are hurtful, and he needs to either be supportive or be quiet about it. I would take the same approach with anyone close to me.
For people who aren't close to you, including customers, the ladies are right: ignore it. You can't please everyone, and there are always people out there who will be rude. The important thing is to be true to yourself. As long as you enjoy what you're doing, go for it.
And one great thing about etsy is that you always have people to talk to about your craft and get support and encouragement from. You guys are awesome.
Finally, for the bunny people, I never had a bunny, but my dad's nickname was Bunny. He got it from his mother when he was a child, it stuck, and everyone knew him as Bunny his whole life. So I love bunny things, too.