I'm furious at myself for not purchasing bitcoin sooner. Though I'm a happy man now because I can now smile at my wallet.
Invest now, so you will not regret it later.
There is a time for everything, and it is very likely that you will miss out on the early investment, but the interesting part is that you will return to Bitcoin.
It is never too late to invest in Bitcoin because it has a bright future. Investing now can be an early investment in the future because we don't know what the future will tell us about Bitcoin adoption. If the rate of adoption becomes very high, Bitcoin will have a very good value in the world and people who invested earlier will be able to enjoy the moment.