Anderton
I've used and actually own Vocal Rider, so I'm familiar with it. The main reason I don't use it is because I don't really need to ride my vocals, I just need to touch them up in a few places and as Mod Bod suggests, doing it manually ultimately gives more control. Part of this is because I may want to emphasize certain phrases due to other tracks playing at the same time, and a tool like Vocal Rider can't make those kinds of judgement calls.
Actually it can if you use the sidechaining function. But yeah, obviously the manual way gives more control. That's why I let it write its automation for easy editing later on. I agree that it is not a magic tool that fixes things. But it does save me a lot of time and still leaves it easy to manually "punch in" when necessary.