Why are atheists SO MEAN?

long ago prophet Muhammad received the same reactions from unfaithful people in Mekka, they called him a liar ,a magician ,ignorant and all the bad names you can think of.....this didn't put him off.....don't be sad ,God will reward you for your efforts ,and as for atheists, they will regret what they are doing to you one day, just think about it, spending eternity in hell is a very very horrible end.