I've ridden with an ex-pro. Yeah, I'm never going to even be in ex-pro condition.
Denial can be a great motivator, however, so keep dreaming big!
Some good advice that was given to me: "I hope you are riding lots" (this is, of course, relative). But basically, I take this as, if you have a job that is not "cycling", then you don't even have a remote chance to reach pro-level conditioning, never-mind the whole genetics thing.