yeah, I know it's a silly thing to bitch about and really I'm not bothered by a single other change in the spiderman universe made by the movies. I don't care that it's now a genetically engineered spider instead of a radioactive one, I don't care that mary jane hooked up with jameson's son before she hooked up with pete or really any other changes they want to make. don't care
But the very reason that Spiderman has always been my favorite superhero is that he is one because Uncle Ben was killed by a thug that Pete could have stopped but didn't. That whole scenario is what drives home the "with great power comes great responsibility" bit and made him realize what he's meant to do. He's not fighting crime for revenge like Batman or because he's an alien (illegal one, btw) with nothing better to do like Superman or a freak of nature taking orders from Captain Picard in a wheelchair. He screwed up, it cost him the most important thing in his life and it made him wake up and realize that someone given those kinds of advantages has the responsibility to do some good with them.
i know, i'm being a dork