Show me an impractical faith and I'll show you one that didn't survive. Ask me to tell you why pork was originally forbidden to the Jews.

[No comment on getting whipped by Kushiel's boys.]

I mean, I'm mostly vaguely the Japanese bouillabaisse of Buddhism and Shinto, but comparative religion and the difference between religions and (notionally toxic) cults is something you get drilled into your head at a school for fighting things like Nyarlathotep. Confession does salve the soul. Mitzvot do give you good habits. Meditation is good mental hygene. These aren't arbitrary rules; they're different ways to be happy.