Wholeheartedly agree and you expressed it so well.
If you get too much bike (or car) to start out with, you never get a chance to learn about the limits. Knowing the limits or, more correctly, what you can get away with, can keep you alive.
To give a 4-wheeled example, in about 5 weeks, I'm going to meet Tom Veale out in Vegas with some friends of his to play around in very light 450-hp cars on a racetrack. That would be a very dangerous endeavor if not for the fact that I've become pretty adept at driving a car twice as heavy and with half the power.