I was reminded again tonight in a conversation about divorce and remarriage how often people misrepresent the other side. This is going to appear self-serving as I will be pointing out how the other side misrepresents my side. I do this with full awareness that my side does it's fair share of misrepresenting too. Now that we have that out of the way...
I hold the view—as I have for a long time—that there are valid reasons for divorce and remarriage. The no divorce and remarriage advocates equate remarriage after divorce with adultery (Luke 16:18). Consequently, they say about people who allow divorce and remarriage that they allow adultery, they are easy on adultery, or their churches are full of adultery.
Obviously I find this absurd for several reason, But allow me to flip the table and frame it in the following way. There are scores of women in no remarriage churches who have lived with abusive, serial cheaters for years as a consequence of that doctrine. They tolerate the abuse and cheating with all of its consequences because they think they can never remarry. And in many cases, the cheating husband will continue to cheat because they know the wife won't do anything about it.
I suggest the view that judges the adulterous spouse by divorcing them is the one being strong against adultery. And the view the makes someone feel like they have to tolerate adultery or live alone is the view that facilitates adultery. That's the view that is more conducive to adultery thriving.
Admittedly this does not prove one way or the other whether the Bible teaches that a divorced person may remarry. But it is a good response to an extra-biblical argument.