Lior: Yes, if I break a promise and end a marriage unnecessarily I have done something wrong. Few people would dispute that. However, that does not make it a terrible Avlah to force someone to remain in a marriage they don’t want. And we do Pasken like R’ Akiva. As R’ Schachter says, “falling out of love” is a fair reason to divorce someone.
TLIK: I totally agree with you about the divorce lawyers and Toanim. About your first paragraph though, what choice is there. If the mother makes seemingly-plausible claims, especially if the kids corroborate, you wouldn’t keep the kids away from the father? I agree that charges should be pressed when the claims turn out to be false, but until then what do you do? The safety of the kids has to come first, no?