I think the biggest issue is that there is nothing between hell and inferno. Once you hit lvl 60, if you are not geared enough for inferno, then you need to just farm hell content for gold to try to afford gear that will allow you to progress into inferno, because the drops in hell are not good enough to do inferno. It's like playing wow, dinging level 85, and just jumping into raiding without even going through heroics.