I don't know if it's a bubble per se or more like the Social Security system in the US. It will be interesting to see what happens to these index funds as the y

I don't know if it's a bubble per se or more like the Social Security system in the US. It will be interesting to see what happens to these index funds as the younger portion of Boomers and older Gen X retire and start drawing down their 401(k)s and other accounts. Older Boomers had pensions, so weren't as reliant on amassing personal savings for retirement, but that's far less common as you move into younger populations.