IPv4 is vastly superior to IPv6. The latter being far too complicated and over designed to have any justification for adoption other than IPv4 scarcity. 20 year

IPv4 is vastly superior to IPv6. The latter being far too complicated and over designed to have any justification for adoption other than IPv4 scarcity. 20 years later and your average non-engineer "power user" can barely get it working without a ton of handholding.