In the example you give, when villain donks 0.30 into you on the flop, you want to raise enough to give him incorrect odds to call, but small enough that you will induce him to call incorrectly. This really varies flop-to-flop but for discussion's sake let's say in the example you gave the board was Q92 with two hearts and you hold AA without the Ah. If you immediately just push over the raise, you're going to get called by the drawing hands a lot less. Sometimes it's cool to just push over a raise on the flop depending on stack sizes and the board, but 100bb deep in the scenario you just described doesn't usually fall under one of those times.

I'm trying to type and 12-table at the same time, so sorry if I'm not making sense.