None of the computers I own personally use IPv6. IPv6 is a bad idea. IPv6 is a straight connection from the Internet through everything in the network, right to the individual machine.
Give my IPv4 and NAT or turn the Internet off.
Give my IPv4 and NAT or turn the Internet off.
(Of course v6 adds more than just one octet, since one additional octet wouldn't be enough even for the current size of the Internet, let alone for future growth. It would be really stupid to go through all this effort, only to have to turn around and do it all again immediately afterwards because you forgot to add enough the first time around.)
It's not though. It goes through a router which has a firewall, which is the exact feature you're presumably wanting from a NAT but without any of the annoying downsides.