On the personal level, I, for one, am tired of hearing how old and how powerful you are. I am at the very least as old as you, likely twice as powerful, and even I accept that I am only one of many powerful beings.
As for being judged on your arrival for past actions, surely you do not think you are alone on that. My son had not even committed the acts held against him before his arrival and many will still hold it against him. He has also fought these wars, defended these people. He earned his place amongst them and you may, as well. But the difference remains, he has not waged threats on the population as a whole on a regular basis.