the problem is epistemology, not aesthetics. why are you comfortable believing in things that are nonfalsifiable? that you find them comforting is not much of an argument.
- life is worth living
- doing the right thing matters
All are unfalsifiable. I am deeply skeptical of anyone who claims to not believe unfalsifiable things.
I do think society works better if we assume these things to be rules (to a degree) and as a member of society I act (and benefit) accordingly, but objectively it doesn't matter at all. The beliefs you mention are a lot like belief in 'free will' in that regard, a convenient fiction.
Making stuff up to ponder the possibilities is all fine, don't get me wrong. But it shouldn't be given too much weight.