You have to weigh the value of immediacy against permanently enshrined qualities and perform your own cost-benefit analysis.
This is called critical thinking, they introduce this around age 12 in most western societies. You don't have to pick a religion and stick with it, you can just make a judgment call on a case-by-case basis.
No necessarily. I think sometimes the existence of something, even if only barely usable, blocks the creation of something else that might be better.