Maybe the men you're referring to in order to reach this conclusion, had the same experience which shaped them. Either way, your arguments are weak af.
Men are trash. No matter how nice someone is to you in the beginning, they'll turn into sh*t once they spend time with you. The more you give them access to your life, the more vulnerable they find you and the more they'll get bored of you. Keep them guessing girls, have atleast 2 or 3.