Why do most butch s not like to be 'touched'?

I'm a lipstick , & I go for butch girls. & 80% of them wont EVER let me touch them ually. I understand if they've had child abuse, or if they want to be a guy, but most of them don't. It can be really aggravating at times, because for me isn't a one way street & it's not like I know before I get into a relationship that they won't let me touch them. So, do you have any ideas why they wouldn't like being pleased, or ways I can get them to eventually let me touch them too without pressuring them? d;