Not let the government have 100% viewability of every financial transaction you ever made
That’s explicitly not the case with gnu taler though.
Edit: I checked their website https://taler.net/en/features.html and I don’t even know if sending person to person is possible. So you might have a point. I would never advocate to get rid of cash though, cash is good. Maybe in a distant future once we really have a digital equivalent working reliably.
Yes but also we can stop turning food into fuel or into less efficient luxuries like meat etc