I stand my ground.  

defending useless statements aimed at someone's character and saying they simply shouldnt care or be mature about it.

I guess they could overlook a slight on their character, but defending it and saying they shouldnt be 'butthurt' is not a mature thing to do.

maturity takes into consideration politeness.  

and saying only civility is needed is not enough.

emotions run high because people dont care about each other and so they dont care about what the other person says.

civility alone equates to I agree to disagree. Anger and frustration bubble beneath the surface, believe me, I've been there.