Common Late Stage Situation

[PokerGenius]

I am just trying to learn. This forum didn't used to be so snotty. I did push, because thats what we are supposed to do. However I know that I get called way too often by a better hand (has someone done math on 6 hands being better than A5?). Wouldn't it make sense for me to wait for a better hand than A5, if I know I am getting called.

In the end I would really like to know what my fold equity was assuming they call with all pairs, A8+. Would you push with any hand?