Well he volunteers for the procedure in an effort to "kill himself" the only way he knows how to - by allowing Stryker to erase his memory.
Throughout the film, he lives the life of a Schizophrenic, he dreams things that feel incredibly real yet that didn't happen - or at least he thinks they didn't. This lack of control on reality has also made him severely paranoid (he hears things that aren't there, sees people that aren't there, the guy's cracking up). He even smells things that aren't there - but I can't go into that or I'll spoil the surprise
If you watch Jonathan Demme's The Manchurian Candidate you'll get a good idea of the kind of memory repression I was aiming for. His past is sort of creeping out little by little and driving him nuts. Common sense is telling him to just relax but his instincts feel that his new life is a fabrication of sorts. It feels artificial to him.
The hardest thing for me to do was to round up enough footage that was post-Weapon X to create the present day/not too distant future Wolverine presented in the film. We don't know what year the story takes place in, it could very well occur before the trilogy or after.
I hated what they did in Origins with his history. They went through a century of events in just 5 minutes

here these events are told as nightmares/dreams. He misses Kayla yet he doesn't know who she is except some "creation" of his subconscious. Its a double-edged sword for him, because he feels more "awake" when he's asleep - yet his greatest fears manifest in his sleep too, and they're embodied by Victor.
The studio never woulda shot a movie like this 3 years ago. Its too sinister and feels more like a David Lynch/Aronofsky piece than a Fantastic Four movie.
I think after Dark Knight was released they all changed their demographic. Origins was completed before Dark Knight premiered so they were kinda stuck with the kids movie.