Do people have the patience enough to know better the other person?

I have the feeling that we are going so fast.
I see that many people put a cross on others without many thinking.
"This person is toxic" " This person doesn't have anything to offer me"
Maybe I'm wrong. Life is short and I understand that we need to be around by people we can connect easily and make our lives easier but aren't we too much fast making assumptions or discarding people?