I think most people nowadays do not like long-term investment, and the sharp drop in prices again makes people panic and sell more than they invest.
Short-term trading for now with expectations that BTC will rebound above $ 10k is the goal of more people, with a profit of about 20 ~ 30% for the 3 months of the year.
That is probably better than the BTC will drop to $ 4k then buy and hold long term, which seems unrealistic in the current situation.
I see that long-term investment is always a wise decision in the time when the cryptocurrency market is unstable. Many new investors enter the market but always want to make big profits by investing short term in ICO, and most of them are losing money. Therefore, if you do not have much experience, you should invest in BTC and ETH.