That's a neat trick, except as CoarseDragon and WHITE WOLF have said, there's no fun in getting that high a level. I reached level 36 and was really bored out of my mind before that.
Because of the damage drop-off once you get too high a level, and because enemies prety much don't exceed level 28, if you get beyond level 31, the enemies do so little damage that you're invincible. That's not fun.
