"Power tends to corrupt, and absolute power corrupts absolutely. Great men are almost always bad men." - Lord Acton
I think it would be easy to say that if you had Peter Stanchek's powers that you would do something heroic or noble with those abilities but I think that if I had Stanchek's powers the truth is that I would end up doing selfish and horribly destructive things with them. I can't imagine that I or anyone would be able to use any amount of self restraint for very long when you have the ability to read others minds, influence those minds, and control other's thoughts at will. Peter is proof of this as he has already selfishly abused Kris Hathaway and figured out that despite the humanitarian facade that Harada promotes, he too has succumbed to temptation and has been using his own psionic abilities to "bilk the system" by acquiring personal wealth and global influence to shape his own personal vision for humanity, despite Harada's casual dismissal of those claims in Harbinger #3.
Sadly, I think we would all end up very much like the little boy in the classic Twilight Zone episode "It's a Good Life". Despite any noble intentions at the beginning of discovering psionic powers, I think we would all slip into a state of personal indulgence and gratification. Kris Hathaway's role of the reluctant companion provides a very effective and constant reminder of Peter's lack of restraint as we begin to learn if The Bleeding Monk's prophecy will come true and Peter Stanchek is indeed the Great Destroyer.