Just for the record, I’m not a boob person. In fact, I don’t care for breasts at all. I personally find them overrated as hell. Having said that, your profile pic doesn’t bother me and never has. It’s cleavage, so what? I really don’t care for breasts and I’m turning my head as to why anyone would have a problem with this.
I think you should change if you want to, but not if it’s because others are making fun of you for it. You shouldn’t let people get to you like that. Let them say what they want about it. Anyone who judges can only say more bad things about themselves than they can you.
If other people’s shit-talking are the only thing that’s making you consider changing it, then screw that. If it were me, I’d keep it as is just to give a big middle finger to them. That’s my input, anyway.