Everything you've said is sensible, though I question whether in a cheap money environment investors will stay away if they've been burned. People fall all over themselves to lend money to sovereigns who have defaulted fairly recently, and that at very low interest rates. I would be surprised if people with access to unlimited cheap money will really stay away.
That said, even if I agreed with you 100% (and you're certainly right in principle), I would not change my view. That's why I noted that humans live only once and have a short time frame to accumulate money. In the fullness of time, yes, this behavior is harmful. But humans don't live in the fullness of time; they live when they're born. Secure your own future and to hell with the industry's.