Yes! The idea of having to "swallow whole" some ideology or list of rules is exactly why I fell away from organized religion in the first place. I couldn't - because someone told me I couldn't - reconcile what I did belief with what I didn't believe. I was told you can't pick and choose. 

And to some degree (like your clarification comment points out), you can't just pick and choose anything. Otherwise, we might have as many religions as there are people in the world. (Whether that's a good thing or a bad thing, I don't know.) But the idea of "all or nothing" pushes a lot of people away. 

I love the metaphor of the buffet table, of taking what we can handle right now and then being able to come back for more. It reminds me of how we learn about God and faith as children - we start with what we know and are comfortable with and, gradually as we get older, we learn about the things that are more complex and dynamic. A little bit at a time, we learn more about ourselves and our faith.