Just two thoughts from a size queen:
First, I understand your emotional sentiment. I would say big cocks are awesome and enjoying a guy who has one is one of the best experiences a person can have. But it's also something that you can choose to focus on, so if you aren't well-endowed, you can just focus on other things. If you aren't extremely smart and probably won't enjoy studying the nuanced mysteries of the universe, you don't have to hang out with people who do. Trying to talk about it all the time without much enjoyment is probably something that will just get you down.
Second, if you aren't well endowed but really DO want to focus on and talk about the subject, it is possible to vicariously enjoy size as a subject, even if you are a straight guy. I find some gratification in making sure a guy with a big dick is pleasured and gets lucky, even if it is with someone other than me. I just enjoy thinking and talking about size even if I am not personally experiencing a big cock. There is nothing that keeps you from doing the same. I assume since you hang out on lpsg you must enjoy the subject- ask yourself why. Maybe you enjoy vicariously enjoying the pleasure of guys who are well hung. I think that's very legitimate.
Just two cents,
Aly