There are many reason to not move up expecting to do better because the hope that you will not run into as many donks.
One, as you progress up in levels the competition, at least some of the players, will be better. However, some of them will still be donks.
You think you have problems dealing with the loss of 2 or 3 dollars after an hour of so of play. Wait until you have $20 or $50 hanging on one hand and a donk takes you out.
Two, as the amount you invest increase so does the stress of losiing increase, which can lead to even more tilt that you might be experiencing at the lower levels.
Simple said. You might feel little or no stress when you get taken out by a donkey at a $2 buyin and move on to the next with very little issue concerning tilt. However, step that up to a $20 buy in and you may be in big trouble if you move on to the next tourney without taking time to recompose yourself.
Point one and two may sound like I am repeating myself, but in a sense it is a bit deeper. However, nothing wrong with almost repeating the same thing to get a point across.
I from time to time watch 30/60 dollar limit games. Now, where it is true that perhaps these players have better info on each other than the guys playing 25/50 CENT limit.
The Donkey playing 25 UTG and catching runner runner for a straight to beat AA who was showing strength all the way to the river is still a donk.
Believe me when I say. That happens at 30/60 Dollar.
The point Bigsmak makes is very valid.
The biggest point is you need to adjust to those donks because, to a point, they will always be there.
That means winning in the long run despite what seems to be an onslaught of bad beats by the worst players.
Cutting your losses and getting out of a hand limiting your losses when the donkey sucks is a key to long term success.
However, you still have to punish the bad decision by bad players if you expect to rake in the pots that will mean profit to you.
It is a delicate balancing act.
When you can do this then you are ready to move up to the next level. Not on minute before then or you will just end up back to the lower levels with a much wounded Bankroll.