basically.
-Korvacs is a fucking good programmer, and as he probably(in fact, very sure) have his client(l2h's client) with a fews anti-bot systems, plus the server anti-bot checks or we. so creating a bot will be really hard.
-Korvacs(again xd) is a well known and respected member here, and the main programmers able to do a good aimbot and make all the reverse engineering needed will not do that, i guess even for money they would say no.
-U Can pay to an extern programmer a bunch of money and the love2hate staff will block it really fast i guess, with ppl posting about u in their forum and so, so u will have to pay that amount of money often... xD
-U can learn how to make it, but it would take some time, even years, and will happen the same than with the ex. of programmer i used above.
so "USE UR HANDS MAN!, WHO NEED AN AIMBOT FOR A PSERVER!!"