All true. And I have the same experience -- in casinos. Online, 2/4 seems to be harder for me to beat. Live, I can play for hours with my initial $100 at 2/4, and usually come out well ahead. I am fairly comfortable with the swings, most of the time.
Online... different story. At .25/.50, I don't tilt; at .50/1, I start to tilt if I am losing a lotta hands on the river or if I get a lot of premium hands that don't hold up; at 1/2 and 2/4, I am uncomfortable with the bigger swings and am more susceptible to tilt. So I protect myself from myself. If you don't have to, good for you.
Actually, I don't have a bankroll in casinos -- I have a budget.
Online, I have a bankroll that I don't want to deplete. I realize that, the way I play, makes it very hard for me to substantially increase my bankroll. It kinda goes up and down in a finite range. So be it. Occasionally I have withdrawn. I just do not want to deposit again, so tend towards possibly severe conservatism.
And I only mentioned that capped hand as an example of the maximum risk. Truly, it's very rare -- except in a couple of the wilder online limit tourneys. I did sit at a ring game in a casino last year where one guy was about to ship out to Iraq and wanted to play very wildly -- he made sure
every hand was capped. For a good 2 hours. He laughed the whole time, as, regularly, his garbage hands hit the flop hard. He left when he finally realized the rest of us were not enjoying this -- and he left with most of the chips at the table. The rest of us were both sympathetic and peeved. One guy was close to crying with frustration. Yeah, it happens.