How important is/was spirituality to you when considering a person as a husband/wife?
I'm not married - WAY too young for that!! - but I am dating a JW, so this is something that I've been contemplating. I think it's a matter of personal comfort, with yourself and your partner, even if your beliefs aren't the same.
I have my faith, I know what I believe and I'm comfortable going to church periodically, but I'm not an especially religious person, so people who are overly zealous about their faith tend to make me uncomfortable, like I'm not worthy or something.
I would never insist on dating and marrying only someone who shares all of my beliefs, that's just insane, and besides, variety is the spice of life. Why would I want to cut myself off from a potentially perfect mate just because his beliefs aren't quite compatible with mine?? That's what compromise is all about.
The only problem I see with spiritual/religious incompatibility is when it affects more parts of your life than just your faith. Dating a JW, like I am, brings about more problems than just a conflict of beliefs - it brings up things that affect your whole life, like no celebrations and more importantly, no blood transfusions, which could mean life or death for your partner and your children.
That's when incompatible beliefs cause trouble, when it affects everything, including the wellbeing of children.
For me, I just want someone who understands and respects my beliefs, even if he doesn't adhere to them, and someone who won't use his faith as a reason to endanger himself and his children, either for social or medical reasons. I'm not looking for Anglican guys only, and I wouldn't turn down a Muslim or a Jew, and I certainly didn't turn down a JW, but there are considerations to be taken.
The key is communication and compromise, and if you have those two things, then you can at least give your relationship a fighting chance. It's all about accommodating and respecting each other in a relationship, and if you can't do that, then it's not going to work out.
Just my two cents.
-Becka :)