Can we just depend on ours comfortability? Poker is a mathematics, and these little percents of badbeats could easily take away your winnings.. I see many people playing 3-6 initial BI's at the tables, but I still believe it is too much risk out there..
And writting down this reply, 2 mins ago a faced a good cooler, which perfectly ilustrates what I'm talking about 
Just short summary: I opened with AA, one villain just called. flop came QQA. Turn blank, river blank. I was happy to go all in OTR, but unfortunatelly i faced pocked QQ from the villain. On that kind of board, there are no chances I can fold my hand (or maybe I'm so low level poker player?). So this cooler just illustrates, that sometimes there is too much risk out there and you have to balance it.
Just my thoughts, thanks for any replies guys!
GL