All right, Syd!!! Not such a wimpy wizard after all!
Most people end the game around level 45-50 at the highest if they play without cheats, although there are exceptions, of course. There are only a certain number of quests to be completed and monsters to be vanquished.
Riftrunner will hopefully be out at the end of the year, and DD2 will be out some time next year. They're working like madmen eating cold pizza and drinking warm beer trying to get Riftrunner out as we speak