@OP, I was recently asking the similar question with poll.
You can find the answers/results there:
Hi, I have possibility do deploy IPv6 in my home network. Is it worth it, except to learn new tech :) Do you run IPv6 in your home networks? If yes, why? Also do you run dual stack or do you run NAT64 and DNS64? Thank youforums.freebsd.org
Someone, maybe you, already did a poll or asked this same question just recently. You should search for that thread and go from there.