Different people are here for all different reasons. These days, there are no doubt more here to gawk at large penises, and to show off large penises, than there are people truly seeking or giving support.
But any guy who's legitimately hung knows it is a mixed bag: there are definitely minuses to go with the pluses. And really, where's a guy to go to get informed opinions on what's the best underwear for a guy who's 7" soft? Or tactics to use to avoid painful bottoming out during sex? Or how to deal with the creeps who will trail you in the locker room to gawk at your schlong?
These aren't exactly questions you can ask your average-size buddies ... and I don't know of any other site like this, where a guy stands a reasonable chance of getting them answered by others who've been there.
So, in a nutshell, that's how the LPSG came to be, and how it got its curious name. Hope that helps with the confusion!
Steve