I have also been thinking about this lately.

Imagine for a moment that cryogenization technology became available tomorrow. Would that help? Should we start forcing everyone to spend 3 years in cryo sleep every year, thus extending everyone's lifespan 400%?

This is far-fetched and just sci-fi for now, but interesting to think about nevertheless: should you go into cryo sleep while you are waiting for the right job offer? Should we cryogenize refugees while we are waiting to find them some shelter after a disaster or a war happens? People surely take a lot less resources if you can stack them, and they are not moving, feeding, etc.

Something like this would require us rethinking our ethics and society, yet it would be a very welcome way to start thinking more about the future.