Funny, my ex refused to work and had a pattern of quitting jobs but I was told by everyone, including people on this forum, that all this meant was that I agreed to this (I didn't) and therefore was on the hook for support.
Hopefully the OP will have better luck than I did.
You had a “rule of 65” element to your case and she was approaching retirement which made it difficult. In a 25 year marriage where the ex doesn’t work (and probably didn’t work when the kids were young) it’s hard to argue non entitlement.