nostr:npub1c30dmy9aq3hwx8eywlrahea3zjxlyyzdafa9t0c90kavjqgnsxcs7vervy
For me yes, I'd rather the fractions of a Bitcoin then nothing.
Most of what I'm using it has already been bought through another rewards card.
It might be better to buy every single thing with cash depending on your concerns. But that's not my situation right now.