I'm not going to warn tinder dates that I have a kid
Why don't you want to give them a heads up that you're a parent?
No, I have never warned them that I have a kid. I don't want to tell them.
It's normal to not want to divulge all of your personal information on a first date, but you should usually let people know that you have a kid. If you're looking to start a serious relationship, then it's good to be upfront about your parental status.
Why should I let them know? I'm an honest and decent guy.
Some people may not want children. You should respect them and be honest because some women who have kids might be looking for someone like you who can understand them better.