While life should not be taken too seriously, this doesn’t mean we should live with absolute frivolity. Yes, so-called religions attempt to mandate all sorts of opinions and behaviors about morality and social conformity. This does not mean that actual religion — the sincere attempt to understand the unknowable — is inherently stupid or necessarily bullshit.
Quantum mechanics tells us that all possibilities exist simultaneously until foreclosed by inconsistent observations. So, with regard to what we truly cannot know or observe, it’s possible that all beliefs are equally "true" and very much real. It’s an incredibly powerful thought: that we can design our own eternity simply by imagining it.
Personally, I’d want much more from my eternity than to party on a pirate ship with a bunch of beer and strippers. The ability to have that experience at any time and for any duration? Sure, that would be great. But plain old life has plenty to offer that’s much more sublime and extraordinary than simple hedonism. And it’s not even a very ambitious vision of hedonism.
World history is replete with terrible evils committed in the name of "religion." Certainly, it’s an important message that moral and social "values" should not be elevated to the level of religious beliefs. But our ability as humans to recognize the fundamental unknowable questions — where are we from, why are we here, and where are we going — creates a fundamental human need to discuss and confront these questions.
Pastafarianism does indeed celebrate the power of the individual to choose his or her own answers to these questions. Some might like the idea of choosing answers that are deliberately silly or absurd. But to do so simply to make a point about the beliefs of others is to degrade and dishonor one’s own spirit.