If you don't want kids, getting legally married is a stupid thing to do. There's really no benefit to it these days and only downside. If you do want to have kids then you should get married.
Remember hot or not? A friend of mine put two pictures of himself on there. One where he's wearing a t-shirt and the other where he was wearing a tuxedo. The pic with the T-shirt got an average rating of about 3. The pic with the tuxedo got him an average rating of about 9 out of 10. Or was it rate my picture? One of those.
Good stuff. I'm an introvert and what you say about pausing your analysis of events to go out in the real world and test things is spot on. It's easier said than done, obviously because a lot of introverts will overanalyze on the spot instead of just being in the moment. The one thing that introverted men need to do when interacting with women is to stop worrying about the right thing to say or do and do the thing. If you make a mistake, learn from it, but don't get analysis paralysis.