Buy now, people thought they were too late when bitcoin was at $2000, same with $4000 and in just a year it went to almost $20,000. It's like the recession. Investors made a killing on the stock market when it crashed, they bought low and held for a few years, knowing it couldn't stay that low forever.
Cryptocurrency is far too established and blockchain is a very powerful technology. It's not going anywhere and right now is a good time to buy