It will eventually come to a day where IPv6 will be all over in every device and server on the web and IPv4 will be extinct, but for now it's quite the opposite.
Actually, very few devices support and work actively in IPv6, web servers all run in IPv4 and few support 6, and ISPs almost every time will give you an IPv4 external address.
At this time I see little reason to worry about. As a home internet user, I also don't see any reason to even have IPv6 locally as it's completely unsupported on the internet. But in a couple of years there will be a gradual transition I guess and we will start seeing more and more IPv6 all over, in a long time maybe. In the short term, I would just keep IPv6 disabled on my machine.