I can't be sure, but i think it was firemaking that got me into all-round skilling. I was f2p at the time & the ge didnt exist. I made my first million there selling strength pots (made at the apothecary) for 1k each in varrock east bank. I was into some skills, but neglected most. I was in the habit of trading things i made for random stuff. So one day i put up some air tiaras and the other guy traded me 100 willow logs. I decided to burn them only to find that i couldnt ... i lacked the fm level. I spent the next two days leveling wc and fm and it never stopped from there. I set myself the goal of getting every skill 80+, and i'm still going at it (although i formulated some further goals along the way). When they reopened rs classic i tried out duelling & some other stuff, but i found it was fm that i got my first levels in. So there you have it, firemaking is the perfect low-threshold skill. Right now, one of my goals is getting 92 for the adze & although i have grown to like fm, i dont find it an easy skill. All of this off course doesnt negate the fact that firemaking is a fairly useless skill (even more so in f2p). But jagex have seen the light, it seems, and are trying to tie it in with as many other skills and features as possible. This cross-breeding of skills & abilities, after all, is the only thing that will keep this game alive.