Now that you mention it, I think I dropped my boat at a starting line once. Pushed into a bad tactical situation and a gust hit. Needless to say, the PRO was amused.
There is a benefit to capsizing (not while racing) in that you do need to practice the skills to right the boat if you're ever in trouble...
When I learned to sail solo (around 7 I guess), I was required to flip/right any boat I wanted to go out in before I was given the stick. I think I started with a Sunfish before moving to the H-17