Cash enables some illegal activity, but at least for me the benefits FAR outweight the obvious consequences
Private transactions of a non-criminal nature ?
Legal wagers made in casinos ?
Your imagination is lacking my friend.
The reason we have cash is (1) we used to not have widespread electronic instant settlement systems and (2) because you still generally need some type of physical fallback system because we energy sources and communications networks aren't always up.
Bitcoin is bad at 1 - 7 transactions per second (something something lightning network), and completely fails at (2) because it can't settle transactions without the internet, and electricity.
> There’s little legitimate reason for people to use it.
Cash is “legal tender, for all debts public and private”. Pretty sure that’s a legitimate use.