Quote Originally Posted by minSim
The game is just less complex shortstacking, as there are less decisions to be made and you have less options per decision, compared to deeper stacked games.

I guess reasons for someone shortstacking seriously are that he can't handle/isn't ready for the complexity of deeper stacks, or doesn't like losing full buyins, or doesn't feel like putting the effort in to learn the complexer decisions, or feels like his opponents are making bigger mistakes against shortstacks than full buyins.
Everything that you just said except the very very last thing is what I just said.