What is the uses of bitcoins is it good for investment or not?

The year 2020 is an unlucky year for the whole world only because of covid 19. This year the whole world is locked down and so bitcoin has lost its movement which is worst than the other years.

It is a good news for bitcoin holders that the price of bitcoin is now increasing in an alarming rate. It is like touching the sky

What is the future of bitcoins? Will it last? Or it will get bigger market than 2020?
I believe it will get bigger market as it is increasing rapidly. It was not even known in 2000 but now it is available!!!

I have seen a video on bitcoin. On that video there was a person who had many bitcoins but at that time bitcoins were not so much used so he hidden those bitcoins in a place and made document about where the bitcoins was. But alas! When bitcoins got market he forgot where he kept those and lost the document. I don't know the exact price but it was more than 1 million

 anyone please reply me that how can i earn more bitcoins? Please help me with this

Can anyone tell me about the biggest threat to bitcoin?  And why is there a threat for bitcoin?