This is the thing. I knew someone would say that. I thought about it to understand how legitimate my concern was. But i think there is a misundersanding here. It's not that i don't want receiver to find out who i am, he already knows. The issue i've always had with some blockchains is that you don't only know who sends you what (which is fine), but that with the address of the sender you can also know who else the sender sent money to and received from. I know this is the whole purpose of the blockchain but if you compare it with what we had with fiat money and bank systems until now, it would be as if you could know the whole bank account activity of someone just because he sent you some money in your bank account. How crazy and unfair that would be? People would never be ok with that. But someone here it's fine, and i don't understand why.

I don't know how we do to send money to someone, keep a traceability on the blockchain for he and I, but keep all the others transactions hidden to him on my wallet (and of his wallet to me also). I don't see how, unless we create a specific wallet for each individual we sent money to in our life and they do the same, which is maybe the least optimal thing ever.

Just wanted to answer to that. I'm reading the rest of your messages for now, thanks for your insights guys.