It still is a good investment, but as others said I wouldn't invest all of my money in it. I've invested also quite late but still gives a nice profit
it is never too late to invest in bitcoin, because bitcoin in the future will increase in value. as much as possible if we already know the bitcoin from now should try to invest in it.
You only need to hold your Bitcoin, do not let by a little of trouble make you give up your opinion and sell Bitcoin. If you do that, you are transfering your chance to others and they will earn profit help you
Bitcoin is good to hold for the long time but unfortunately when the people use to see that the price of the bitcoin is getting down they become scared and they panic,,, as you suggested they should not panic and they should hold the bitcoin for the long time so it will make them earn good income. So invest in bitcoin and make the future bright for yourself.