Long-term trade is good for those people who only recently entered the crypto-currency market and do not have sufficient knowledge. Just buy the best coins and wait. In the long term, the market is growing.
Choosing the long term ahnj at this point is completely wrong, you can see that the market is in downtrend in the long run so the bitcoin price will continue to fall sharply further and according to my analysis the bitcoin price will May drop to $ 2000 at the end of 2018. That's why I believe that if you invest long-term in bitcoin you will lose a lot if the market can not recover.