there are not too late to buy bitcoin now because the price is less than $10,000 and now you can buy at $7400 although its higher than yesterday but you could buy at the lower price. but you need to know that bitcoin have a volatility for the price so you need to stay calm if there are a changing of the price which always happens with bitcoin. once bitcoin price increases again, you can make a lot of money from bitcoin because the highest price for bitcoin so far is $19,000 in December last year so I think you will hold in the long-term to see the price increase higher.