BTC I don't think its late and in fact for 2-3 three years it won't be. The price of bitcoin is in the upward trend ever since it was created though it had its share of volatile price decreases, but as more and more people know of it and the demand keeps on increasing the value of Bitcoin will be upwards. Government policies and threat of aggression from countries like North Korea has significantly increased the bitcoin price as the Asians are dumping huge cashflows in Bitcoin.
       But lookout for price changes and try and time the purchase if possible. track its value and make judgements based on your own analysis. Its never too late but hope the value keeps on increasing.
Good Luck