If grouping is mandatory to get 'decent' or more exp(or however their advancement system works) I will not play this game. The single one thing I hated about FFXI was that no group, no exp. I've read that they plan to make the game more solo accessable, but unless I can solo my way to end game without it taking 6 years, I dont really think I want to play this game.
I loved grouping in FFXI, but the preferencial treatment of jobs, on top of the jp onry and lack of people seeking in range sometimes just made it to **** tiresome to LFG all the time. I'd love if FFXIV made grouping be a thing you would want to do (IE more drops, better exp), but soloing still a way(a logical and comparable way) to hit the end game.