[HitmanLV]

Not at all. The fact that a person is in a bad marriage that is worth getting out of doesn't necessarily compromise their ability to see moral issues clearly.

I think the main problem is that a lot of folks look at divorce as immoral. That clearly isn't necessarily so. There's the disconnect.

[Mrs. Don-o]

IF (and I guess that's a big IF) you took a vow to your spouse to enter into a permanent bond of marriage, and you take up with somebody else (whether via adultery or via divorce and remarriage) that's immoral because it's the breaking of a vow. It's a falsehood of a particularly serious sort, like perjury. And if God was formally invoked as a witness, then it's sacrilege as well.

If there was no vow, then there was no such violation.