I believe IPv6 will never be universally used unless there's genuinely no choice for anyone. We're out of IPv4 addresses, but technologies like NAT are making that workable (so far).
"For a long time it seemed to me that life was about to begin - real life. But there was always some obstacle in the way, something to be gotten through first, some unfinished business, time still to be served, a debt to be paid. At last it dawned on me that these obstacles were my life. This perspective has helped me to see there is no way to happiness. Happiness is the way. So treasure every moment you have and remember that time waits for no one."
- Souza