I don't want Sony to leave, I just don't want them to be the only big player. Sony helped grow gaming tremendously, making a lot more popular, cool and mainstream. So Sony will always have my thanks for that. They're a major part of the reason so much money is poured into videogames these days. So anybody who considers themselves a gamer would have to be nuts to not give Sony their props for where gaming is today.
Yes it's why I disagreed with you saying that Microsoft is saving gaming from Sony. To be honest both Sony and Nintendo have saved gaming at some point. It's more like Microsoft is saving themselves which isn't a bad thing BTW. That in the end should provide stronger competition to Sony but I don't see playstation going away which is nice.