Yes, it still makes sense to buy bitcoin now because its value is not so big compared before which has a high price that only a few can afford to buy. If you still believe and still planning that bitcoin will continue to increase and the sudden drop is just a bitcoin correction that can make the economy of crypto currencies healthier than I would say that you can still buy now and wait for the right time to sell it until it recover. We buy at low and sell at high to make a big profit and not to lose any amount. The choice matters a lot here in crypto world.