If you want to speed-up the process of becoming one of those "grizzled veterans", then I would encourage you to start out with no suspension. That will force you to develop better bike handling habits, like picking the good lines, using body english to finesse your way around obstacles, and training your body to anticipate and absorb the bumps, instead of just plowing mindlessly over everything in your path. Of course, once you've paid your dues and make the jump to front suspension, you'll notice a dramatic increase in speed. But what's the hurry? Master the basics first.