Nasty comments

Has anyone ever heard the saying... "If you don't have anything nice to say don't say anything at all" !? I don't get... Like if you don't agree with another moms way of doing things or how her family is then just keep it pushing! I never even knew the community existed in glow I got the app for weekly updates and then after 4-5 months I noticed it.... Now I wish I never did. Woman can be so hurtful and disrespectful. I know we're all hormone crazy but take it down a notch ladies. We are all of child bearing age which means we're all adults. Let's Try and practice what we will be preaching to our children. That being said anyone know of other apps like this where people aren't so nasty? I know you will find this every where in life but I better support group would be nice.