The next generation isn't being born, because their would-be parents are saying "I cannot afford to give my children as good or better of a life than I had". The equities that labor's value is stored in are beyond their reach.
There's really only two ways to deal with this:
1) Get the older generation - the Baby Boomers - to work longer and rely on their stock-based savings less. Given that we've structured our entire society around them getting to retire to Florida for golf and wife-swapping until the dementia sets in, I don't see them being willing to stick around the office longer to produce value for the economy.
2) Import labor through immigration. Given that one candidate for President right now is running on a platform of severely curtailing certain types of immigration, and is doing so successfully, I don't see this being a viable option.