ipv6 is hardly an abandoned standard, 35% of google users access google over ipv6, and it continues to grow every year.

https://www.google.com/intl/en/ipv6/statistics.html

IPv6 is also usually faster than ipv4 these days, because the overhead of fragmented ipv4 routing is large. In the past it was slower because of lack of understanding/support for it from larger ISPs, and consequently poor routes, or really suboptimal tunneling setups.