It's quite possible he has a non-standard conception of what marriage means. Heck I can't think of any episodes pee even scenes in Star Trek that touches on marriage in any way. I'd say it's possible that he sees it as it is: an institution born out of social structure, which is objectively unnecessary to life. Doesn't change whether he's good or bad because it's a subjective measurement.

It's hard to know enough details about the three people most closely involved. To make matters more difficult, a person being "good" or "bad" is a very subjective viewpoint. No, he was probably not good to his wife, and no he admits he wasn't a good father.

At the same time, he was a pro, and his abilities to inspire belief in the goal of being a better person helped countless people believe in something bigger than themselves.

Not to create a strawman out of thin air, but I'd argue that he did more good for far more people than he did to hurt and estrange his family. If there is an equation for such a comparison.

There is no way to condone the damages he caused. I just think it's better overall that we had him as he was, than not at all.