Decision based on your ROI

[slimbob]

I had a discussion with a friend about decisions made on your ROI.

For example:

Assumption: You have an ROI of 50%. (I know this is ridiculous high but its only a theoretical assumption)

You play an 100+9$ SNG at party. All 10 players have 1000$ stack.

Blinds are 75/150 and small blind with 1000$ stack push with AKs.

Assumption: You know that he has AKs. You have TT.

Do you have to call because its +$EV?

Do you fold because these decisions lower your ROI?

Ok i know this is only a theoretical discussion. I am only curious if your ROI can have influence at your decisions.

Best regards
slimbob