As long as you play your hands right, those AA -KK - etc
rest assure in the long run, you will be the winner.

If you start and continue to leave it in the back of your mind
that you can't win with those cards, your not meant to play poker long term

bad beats happen, suck outs happen
that is where they got the term " thats poker "

people see it more online, because they see 75% more hands then they would live.
Another thing that is more aware to online then live, is the hand historys
people are always posting everytime they lose a hand. Take Momaboy as an example, he only posts bad beats and suck outs.

He's a good player, I've sat at a few tables with him on PKR

but because players get the nagative in their head, IT STICKS
its so much easier for the mind to remember the bad, over the good.

do you remember when you raised pre flop with AA and everyone folded?
or what sticks out is the donkey that called you down with 72 to hit his 2 card flush?

Poker is much more a self mental game, then a play the cards, play a player.
you are really playing yourself

After every hand, till you learn self control, forget them
you do no good to remember the how, or the why
the only thing that you should remember is the who