It isn't late too do anything until you have the fear of losing. But in case of Bitcoin you will at least not lose. You will make bigger profits in coming years as it would be world wide accepted electronic currency which is gaining acceptance at faster pace.
Yeah the bitcoin year will continue to grow to be better as well as the price, bitcoin price will also be higher in the future. So even if you join and invest your money right now. It's not at all too late because bitcoin prices can still grow high