Hi, Kara. You know me. I started out a devout catholic with very strong family rituals (rosary crusade, novenas) and have no theistic belief after I entered my thirties, now hitting seventy soon enough, puzzling through my late teens and twenties. I guess I was lucky I married an agnostic, so there was none of the sturm and drang that might have gone on in that area.
I can imagine having no grounds for discussion, and I know you've been married a long time. I guess it would be down to your estimation if he could begin to understand you, even if he disagrees. And only you can judge that, if you even can. I can see wanting to communicate on all this, even now.
I can also see letting him be with his mode and sucking it up, again, again.
I now think my father was agnostic, at the least, and went along with my mother, having had years to think about all this in memory (they died fairly early in my life). Super passive aggression on both sides, no wonder I'm a fool. Silence the rule, at least in front of me.
Are you able to talk with any of your children about this? None of my business, of course.