I know I'm going to get flamed for this but here goes ....
Crashes shouldn't happen. They are avoidable.
I doubt anyone would argue with that. That's just common sense. However, just because something is avoidable and shouldn't happen doesn't mean it won't ever happen. Whether or not you've experienced it, crashing is a part of flying quads. That doesn't mean you have to crash, it just means that it's a possibility.
If you're always cautious and fly slowly you shouldn't ever crash, but some folks don't fly that way. Nothing wrong with pushing it as long as you do it in a safe place. Heck, even if you're flying with all the care in the world, a hardware failure will give you a one-way ticket to mother earth real quick.
The main issue with crashes is location. If you're flying on your own property and want to push it to the limits and possibly crash, well, that's your prerogative. I don't see how that has any effect on the reputation of the industry. Being stupid and crashing on property that isn't yours is a different story. That should always be done with caution and care.