I agree with you. I also don't like long-term investments because i also make money by buying and selling by following market prices. In my opinion, long-term investment for the current time is not suitable because market prices is volatile, besides that we lose the opportunity to get profits more and more. If the price goes up maybe our bitcoin is high value, but what if the opposite? Our bitcoin or altcoin will be reduced value too. It's better to buy and sell altcoin or bitcoin to get a profit.