kk im a money burning mashine! hang myself or jump off the roof?

[Zinobrinho]

http://www.pokerhand.org/?1546612 vs 24/21/6

http://www.pokerhand.org/?1546618 vs the same

http://www.pokerhand.org/?1546627 vs 60/10 bigstack and 21/12 midstack

im fairly often beat against the midstack but i think when i shove the fish bigstack will call often with worse and make up for it or should i justt fold

and one hand is lost but it went like that

i got qq on the button the blinds call
flop is 6s8s6d i bet 30 in the 45 pot 20/15/2 player raises me to 75 i make it 200 he pushs and i call