What I have seen (on Asura) is several people with main jobs in the 40s (or higher) and no subjob. I don't know if this is some sort of flavor-of-the-month fad or new players not understanding the importance of subjobs or just terrible, terrible epic failure.

I just came back from a two year break so my highest character level is still 75 and I haven't been to Abyssea yet. I'm just enjoying exploring parts of Vana'diel that I never saw much of in previous years. It is a nice change of pace to have the freedom to explore the world solo with practically no fear...unlike the days of old in 2003 when an "easy prey" mob could kill you...easily.

I did spend an hour in Gusgen Mines as part of a book burn alliance just to see what it was like. Noobtastic is all I can say.