Actually I think it has always been a good time to buy bitcoin, either at $15,000 or $6,000, because I have no doubt that the market is just in an initial stage of growth and I really believe that bitcoin can be worth at least $100,000 in a couple of years. It is true that many consider it dead due to its supposed scalability problems, but the great advantage of its popularity can never be defeated by any other altcoin.