I wouldn't have been against signing a pre-nup, and I wouldn't even be against signing a post-nup now. But as someone who had a career and a job that paid a wage that a newly single girl could easily live on, and who gave that up and now instead has a 5+ year gap in her resume, no way in hell would I forgo all alimony. There's a time and a place for it, IMO, and reasonable limits.
I believe that in CA, I'd be "qualified" for alimony for life at this point. That's ridiculous (note to self: delete this post in case of divorce

), but a couple years so that I could find myself a job and get reestablished and undo some of the damage OCONUS living has done to my lifelong earning potential? In my world, that's not unreasonable. Would I take half his retirement? Probably not, but that depends on the reason for divorce, I guess, and the intensity of the desire for retribution. In some Jerry Springer scenario where he was sleeping with my sister? It tough to say what I'd feel or do.
Like all things, I think there is a reasonable middle ground. Anyone who insisted on someone agreeing to no alimony under all circumstances probably isn't ready to be married. But anyone refusing to set any reasonable limits on what alimony she might ever be able to collect is probably not someone anyone else should be ready to marry.
Even if people aren't interested in doing an official pre-nup, I think the "what-if" conversations about what an imaginary pre-nup might include or what each side thinks is reasonable when a marriage ends under various circumstance are a valuable--if supremely uncomfortable--exercise for an engaged couple. Serious differences about matters like that can be a sign of troubled waters downstream.