1, "Eventually" look at the gold chart from it's first peak, that was a very steep decline, and that was without the modern mouse click dump we can see today. In my humble opinion Buying somthing just because it has gone up is as dumb as selling something just because it has gone down.
2, "Depression", It wasn't even the worst recession we have had,
3, I wouldn't call it healthy,
1. If mouse clicking had anything to do with it than it would have an even STEEPER INCLINE than the first peak!!! You can't have your cake and eat it too!
2. See above. The point is that the All Ords went down because of one of the greatest global financial crises we've ever had/have - everything was going down at that time. If you wanna call that a bubble then you might as well say almost everything was in a bubble.
3. You probably wouldn't have called it healthy at $1200 either.
4. Do you know why bubbles burst? Because of some fundamental reason. You call yourself a fundamental investor but I don't see you coming up with ANY fundamental reason for why it is gonna pop soon, other than 'the graph looks that way'.