I paid full price for Sparrow and used it for two months. I didn't like it and switched back to Mail.app. But I don't feel ripped off because I got my money's w

I paid full price for Sparrow and used it for two months. I didn't like it and switched back to Mail.app. But I don't feel ripped off because I got my money's worth from using it. The app works, so I don't know why you would feel ripped off, fire sale or not. It's an overglorified EMAIL client for heaven's sake. How much more can you expect from an app that does e-mail?