The value is that you don't get caught with your pants down when IPv4 addresses get expensive enough to shaping businesses' decisions. It's going to be a lot less stressful to come to grips with IPv6 now rather than waiting until it becomes a critical path dependency of some business goal.
Of course, turning off IPv6 fixed a lot of connectivity issues, at least back in the day. Maybe it's better now, but I see no benefit in re-enabling it. What's the value-add?