Hello Gardener,
this is my 1st step communicating with like-minded folks that don't descend into tribalism and the negative bits we humans seem to create in that medium. I'm sorry your parents sound very sick. Are they near the end-of-life stage? If so, at least relatively comfortable with proper medications and the support folks trained to care for people in your parents' position? What comes up for you regrading their situation? Wishes, hopes, regrets, could've, should uv's, and would uv's? Are there things you're having difficulty accepting? You sound like a nice, thoughtful fellow.
I'm here because I have stopped believing certain tenants of Christianity. I never believed or accepted the salvific theology and discovered I felt more peace when I concluded that with myself and whatever mystery is God. I do believe in God and have had too many sublime intuitive instances/coincidences thru life to doubt there is more grab-astic shenanigans in the universe and around us than we can conceive for now. So I Believe, but not at all in the Religious Protection Racket disguised as Salvation sense.
Anyway, I hope you have a great 4th of July and try not to take life too seriously. All everyone Really has is this day and our friends & loved ones. What will we do with that today?