Well, for me is sometimes difficult to deal with the difference of importance that the game has on each person's life. It really gets me when a player is only
gambling during his/ her happy hour, and the recreative calls with a loosing hand, but hit what needs; what we call a bad beat.
The frustration is not about the cards, the element we can't control, it comes with the reality of each one: that player is there to spent his/ her money. On our happy hour, thats what we do: we spend. So, the game is awesome when you spend, gets it all back and even profit: but you didnt need that money, you were just lucky.
I see online players calling shoves with absolutely nothing, and celebrating the pot they won while the other, who spends hours studiying the game to be lucrative, ends up having a big hole in the time to pay the bills, only because some rich person decided to gamble his money and got lucky. He even celebrates your loss, having no idea how that money would make a difference in the next's life, while for him it would hurt nothing to lose.
But, wanting or not, poker is a capitalist game, one have to lose so the other might win. I'ts just how it is, so It's up to me learning how to handle this social frustration, and enjoying when the expected result that we've studied to understand happens, and those who really need the money get it.