There are a ton of reasons people turn to evil. And keep in mind that there are different levels of evil from Horrid to slightly etc.
Usually people turn to evil because of feeling inadequate or angry or fearful or some other Character defect. Its not always a lust for power.
After finishing the ENTIRE series and seeing how AWFUL some AES Sedai could TRULY be to their warder I have decided that I was initially wrong :)
I Concede to Deira that I have made a mistake. While I love the idea of being an honourable Warder, the reality MAY be very different:(
Super worst painful scene for me is when Ingtar is revealed as a dark friend :(
One of the Best? When he screams at the Shadow and charges in to redeem himself!!!
Also I don't Like the Mat and Tuon relationship :)
I know its necessary and he wrote the courtship very well. I just don't see what there really is to like about Tuon. :P
One if my least favorite characters in ANY series LOL
That's the Biggest reason I dislike him. He was already a Selfish P*ick. But then he screws her over in his desire to prove he is awesome. He was super vain. Don't like him at all :)
Galad however I kind of like....