I guess in the future I'll make sure I don't peak so I don't let previous hands effect a future hand.
And definitely this. The only reason previous hands should influence a decision is when you're considering what you've seen the current villain do in previous hands. What your database says about your turn profit is irrelevant. What's relevant is does he have enough hands in his range that we beat for this to be a profitable call? That is all that matters now he's all in.

Since he called a flop bet, he's unlikely to have non-draw and non paired Kx hands in his range. He'll have some Kx, like KT, but not as much as if the king flopped. That's why I think we have a call here, because he can have AT QT JT flush draws and more, as well as the obvious scare hands like sets Kxdd and KT.