Yes, previous Bitcoin high price is $20,000, people who are buying at the current value are aiming that the price of Bitcoin will cross more than $20,000. For some people, it is impossible to buy the whole amount of Bitcoin, so it is good to buy on parts whenever we see a downturn. So we should always aim Bitcoin as long term investments.
maybe it's true that Bitcoin can be a long-term investment tool, because for years the price of Bitcoin has risen sharply until now, but in 2018-2019 the price has decreased, if 2020 is able to reach the All Time high at $ 19000 then that's an extraordinary thing