In my case, dating and social interaction are irrational, so how can I get my parents to stop pushing them?

You can say to your parents to just look at the pattern that you must base your life on, which is theirs. Also, until you become a policeman, you need to allow a person to entrap themselves into situations that will cause them times of imprisonment. You are not God. Now, keeping your gene pool to die with you may not be a bad idea, if this is the type of person that you really are. And how many people have gone out to save the world ahead of you? And the world is still not saved. You are trapping yourself into a world that will be lonely and gray. Maybe someday you can fall in love with a digital camera or something and make passionate love to it after you two are married.