Men are not nice? Odd. I've known plenty of nice men.
I, as a guy, am regularly engaged in private messages helping others. I have one friend I've been helping through things for over a year.
Everyone loves my dad. Many not even related to him see him as a father or uncle. Kids are crazy about him.
I once dated a woman with OCD, ADHD, panic disorder. She had a son with ADHD/sensory overload issues.
I remember as a teen my best friend going up to a man in a restraunt he thought looked depressed, he was asking the man of he needed any help.
I could go on and on about the good things done by good men ice known. So I can't be convinced men are not nice. I could tell you some stories about what mean things I've seen women do.
The issue, again, isn't gender. It's the people around you. If all the men you know are not nice that doesn't mean all men aren't nice, it means the men around you are not nice. There's a big difference.