But after a decade, we still haven't seen a single crypto massively used by the public to send value.
Ooops, you said that you have been into crypto for a long time but why say this? You haven't seen any single crypto that massively used for payments? I think you know what I'm saying and why I'm asking this to you. We have
BTC.
I think ETHARemit is one solution that could solve this.
Oh, for those who doesn't read the whole idea or sentences at the very last of OP words you have the idea now why he haven't seen Bitcoin for a long time being used as a payment.