User blog comment:MrAnonymous/Why is Scott being such an ass with Derek?/@comment-2020973-20120613040252

I don't think it is about being an asshole. Derek does think he is helping these people because unlike Scott he see's being a werewolf as a good thing because he was born a werewolf and his family had many werewolves in their bloodline so he does not see it as a bad thing, though his intentions are not truly pure as he is also looking for a way to increase his own power.

Scott see's it diffrent because it was forced on him and has caused him a lot of grief in his life and he doesn't want to see the others go through what he has had to go through with being a werewolf, but his own issues with Derek make him a little to quick to see Derek as being the bad guy.

So all in all it is just a matter of diffrent opinions.