Bitcoin is growing day by day even though there are few dumps here and there. The currency has been growing stable for quite a few months now which shows that even if we invest now then its not too late since BTC has the capability to grow more and more. That's why the elder ones still have a chance to sail the same boat as we are in. Bitcoin can easily cross $10000 which would still be 25%+ than current price.
I think yes already too late of jumping on the crypto train for who is retired but Bitcoin is the best choice for investing if they want
Because people are investing more in Bitcoin, Bitcoin price is increasing rapidly, Bitcoin potential currency its give us profit a long run