Christians can be a fandom, just like Veronica Mars. Surprised it took this long for something to be this successful.
And none of them are renowned for their acting chops.
Why? Maybe it just doesn't sell. The fastest growing religious belief in the US is agnostic (or was as of a year or two ago).
From my reading of the NT, there's a lot of walking away from worldly things by those who chose to follow Yeshua, so I do respect it when those to talk the talk actually walk the biblical walk.
Self sacrifice can be noble, though in my experience it can also become destructive. Biblical teachings--sometimes explicitly--proscribe things like putting unverifiable authorities above ones closest family and friends, poverty, never closely associating with non-believers, and faith without evidence.