i think it is never late to trade bitcoin. in fact it is the beauty of bitcoin that it provide opporuntires to its user to buy biitcoin at any start and get profit. becasue there is too much potential to the price of bitcoin and hope that bitcoin price will continue increase for long long time. i myself have invsted a good amont of money in bitcoin but i have invested my money in bitcoin for long time. i personally have no experience in short term investmetn, and therefore i always choos long term investment.