I think that it should be all about wanting to self-educate right now and no other reason unless you are a business network owner.
It certainly is the natural successor, but people are being very slow in cleaning up their act. We will start to see more and more adoption of IPv6 by corporates as, like Microsoft, they don’t want to pay $10-20 per seat for IPv4 addresses even if they can get them at all. Their server farms are needing IPv4 ‘real’ global addresses of course unlike the corporates who use NAT and 10.0.0.0/8 addresses internally. Mobile networks will wake up now and one day start using IPv6 rather than having to deal with the nightmare that is CGNAT an all the potential screw-ups that it entails.
But the point is you have time. You can start using the first IPv6-only websites, some of which have already been around for ten years. Like
http://loopsofzen.co.uk which is IPv6-only, at 2001:8b0:0:30::666:102 - In decades’ time, more and more will start to appear when all users have IPv6 and the IPv4-only fraction starts to go down and down to a safe-considered level.
If you have problem kit, just get rid of it if needed. With a decent modern router and a sane IPv6 ISP, it’s incredibly easy to get going and you can put your toe in the water first by using the Hurricane Electric tunnelbroker.net tunnel I mentioned earlier, which is free. I just filled out the RA element in the XML config in my Firebrick and specified the prefix for my LAN (which is 2001:8b0:xxxx:0::/64) and it all just worked.
I have tried out IPv6-only, which is indeed hardcore, on a
hosted Raspberry Pi hosted by Mythic Beasts, which has no IPv4 address. That will make a very interesting experiment for you !
One thing you can do is:- don’t buy non-ipv6 kit or software; vote with your feet, or even better moan at manufacturers/authors/ISPs. Like I did with Zen. And even with AA: I have repeatedly moaned at them about the lack of IPv6 on their 4G data SIMs, although it’s not something that they can easily fix as they are at the mercy of their stupid service providers AQL and/or Three.