I'm 6' or so myself, but my brothers are 6'3 and 6'5 and most of my cousins are taller than me too, so that gives me a pretty warped perspective on height. I always expected to be tall, but among young guys in my country I'm only a hair above average, and whenever I see tall guys I can't help but feel incredibly envious.
I'd kill for 2 inches to stand comfortably above average and finally enter "tall" territory. I think the fact that I'm taller than most candidates should lessen the risks too, since it's less proportional gain. Still, I know that as an above average man considering leg lengthening, it's more insecurity and neurotics talking than actual sense. Is it really worth the insane cost and substantial risks just to satisfy a a silly insecurity? Probably not. But I know it'd make me happier. There've been plenty of times where I hung out with shorter guys, or even where I forgot to take off my shoes and everyone else did(lol) and the feeling of standing out as being the tallest or one of the tallest there was euphoric for me.
So I don't know. Is it narcissistic of me? Yes. Is it insecure? Yes. Is it sensible? Perhaps not. But is it worth it? I think no matter how often I tell myself no, I'll still always think deep down that it is.