1st reason for Bitcoin:
This is not money. This is debt or legal tender for debt based monetary systems:
2nd Bitcoin reason:
Bitcoin is freedom. Banks can take your money trough Bails-in, govs. can cnfiscate gold.
3rd Bitcoin reason:
Bitcoin is transparent money
4th Bitcoin reason:
The value of 1 bitcoin will always be 0. Just like the value of 1 Rebrand painting is 0 since is just a dirty rag.
5th Bitcoin reason:
If money takes 0 energy to be created by the push of a button, it's value will tend towards 0 as well as it's purchasing power.
6th Bitcoin reason:
Finance will be eventually dematerialised. Just like books, newspapers, photos, you name it. But first new technology will always be fought and resisted.
7th Bitcoin reason:
This one is all yours to find out. Conviction.