For me it is now bad to invest in bitcoin. because bitcoin today is very expensive. But there are still a good way to earn, there is a or of altcoins that we can choose and we only need to select a good and promising altcoins that is so cheap for today and hold till it rise.
If we look back in 2018, people are saying the price is already too expensive and will bubble anytime soon but in 3 years price back recover and set new all time high. As long as many people adopt cryptocurrency to their bussiness the price will keep going high because the market volume is increasing. So i think it's not bad to invest right now than wait for more time and the price got higher