Amen, Ben. My last wife was a Buddhist, but was at heart completely unhappy, and she drifted further and further away from me until we were living like roommates. Except my roommate yelled at me if any of my stuff was lying around.
I hope without me she can live the life she wants to live and find contentment. None of that seemed possible with me.
My current companion is in her words a "recovering fundamentalist Baptist." She turned her back on all that stuff and today would describe herself as spiritual but non-religious. She enjoys that I'm a practitioner because I remain calm during times of stress and crisis. I also carefully examine what I say or do to make sure my words and actions are true, helpful and not hurtful. This means I must hold my tongue sometimes. But just because you have an impulse to say or do something doesn't mean you have to say or do it. I wish I knew this when I was nineteen.
All that said, my current companion and I are almost perfectly compatible, which I think is the bottom line in any relationship. If you're not compatible it won't work out anyway. I let her be herself and she lets me be myself. So far it's working out fine.