Maybe this can be a thread for this question.
Maybe not a why, unless we convince CDNs to make peering on IPv6 compulsory otherwise you cant peer.
Why do we need IPv6? It is mandatory to have IPv6 BGP sessions when peering with CDNs like Meta and Google.
the question of why not, comes up and people say that NAT with v4 makes it more secure, so that would probably need to be debunked as well.
We know it should be the opposite way round where we say “We want IPv6 because we dont want NAT”
Other thoughts welcome