Atari, from a sample of one perspective, my xh has just recently been telling a few people what regret he has over what he's done. We have had NO contact whatsoever for at least the past 5 years, so who truly knows what he thinks or feels, and to be quite frank, at this point, I really couldn't care less. We are coming up on 9 years since his MLC meltdown, if that tells you anything about how slowly things move in their new found "freedom".
Your plan of building your best life is the best thing you can do for yourself and your kids. The rest will take care of itself. Merry Christmas and best wishes for you in the coming year!