Ain't got nothing nice to say, don't say it!

I don't understand WHY girls on here are so mean & repulsive. It honestly needs to stop. I thought this app was all about being nice to one another & helping each other w/ questions/advice. I posted about my belly button piercing a few days ago, & some girl had the nerve to tell me I was "too fat" for the ring I have in. For one, yeah, I'm a little uncomfortable with my body at times. But other times I'm like "damn!" I don't understand why girls on here feel the need to try & lower someone else's self esteem. It's not hard to be nice to somebody.