

Personally, I think IPv6 is not a good choice for any service you don’t want associated with a specific device. As I understand it, the prefix delegation comes from the ISP, but often the interface ID is derived from the machine’s MAC address which is a link to specific machine hardware, can reveal information about the host, and possibly deanonymoized across networks.
I’d stick with IPv4 because NAT gives a tad more anonymity. Just my $0.02 though.
Meanwhile our plastic bag tax has pretty much eliminated paper bags and raked in fortunes in profits on plastic bags.