Of course not. I’m lucky enough to have friends and family of many faith backgrounds, and I’m always happy to attend a service as a cultural experience.
But repeatedly attending religious functions? Respect doesn’t demand that, not even when it’s your parents. There are just certain things adults don’t owe anyone: their religious beliefs and practices, their choice of a life partner, their choice of where to live, their diet*, and how they raise their children. You can have all the love and respect in the world for someone, even your parents, but you still don’t owe them influence over any of these. Nor should your love, devotion, or respect be called into question for refusing to bend on your own convictions.
*The exception is when you’re being hosted by someone of limited means who either didn’t know to accommodate, didn’t know how to accommodate, or could not afford to accommodate your diet. I don’t care if you’re vegan, gluten free, Jewish, or a Catholic on a Lenten Friday. Show some gratitude. Allergies and Celiac’s excluded.