Quote from BungloMy first play though as the barbarian, I was completely underwhelmed and disappointed. I gave it another go as a monk and explored a bit, crafted some items, etc and started to get into it more and more. I'd say just do your own thing and ignore the quest until you want to move on, the linearity of it thrust me through the beta without experiencing much the first time around.
The thing is, if you remember Diablo 2 and more so Diablo were very linear too. Instead of tight corridors you had large squares but you still went from A to B to C to D.