Buddhism is not a religion. One cannot 'convert' to it. It is a philosophy. One can be Christian or Jewish or Muslim AND be a Buddhist.
Second. If you want to put up Xmas lights for your kids, put Xmas lights up for your kids and banish her 'you get to put up the Xmas lights' from your thoughts. You do it for them, not because 'she' said so.
When W said to you, "Oh, I didn't think you were the type of man who would divorce over sex, you should just leave now..."
You should have zoomed back to her, "Oh, well I didn't think you were the type of woman who would withhold essential emotional, sexual expression within a marriage, you should have never said yes."
However, hind sight being 20/20, that comment does us no good. You were very close to drawing a boundary with her. When you are feeling up to it, and the issue comes up again... and she says something along the lines of "Oh, I didn't think you were the type of man who would divorce over sex, you should just leave now..."
Say to her, "yes, I am a man who will divorce over being forced into celibacy. I own it. I would rather divorce you than cheat on you, for I'd rather hurt you honestly than mislead you with a lie (that's in a song...). However, I am not ready to leave yet, I still have hopes for us, and the kids need us together. When I've reached the end of my rope, however, I'll let you know. Let me know when you are ready to confront your trust issues. I'm ready whenever you are."
And if that don't work, give me your address. I'll fly my wicked witch ass to St. Louis and plant my pointy toed witch shoe in the nether regions of her azz.... life is way too friggin' short.
Sorry. I have no patience or tolerance for stupidity and self-serving behavior.... my Dad informed me this weekend he has Prostate Cancer... and I'm about ready to kick Mrs. H-dog's butt just to relieve my rage and frustration.