It is actually not late to enter crypto currency, as many say we are just in the beginning of it. Crypto hasn't even seen it's real potential yet, Still it's the time for new experiments, with the number of ICO's coming we can see that.

So yeah, this really is one of the best times to enter the field, many predictions are based on 2020, where Bitcoin price may pass 5 figures again, and many other coins/ tokens will stable too. so any time before that is a good time it seems.