Well, I moved here 2 years ago after 8 years in Oklahoma and growing up in Mississippi, and this is the most beautiful place on earth. I still spend lots of time with my jaw on the floor. The mountains are amazing.
Utah's mountains are beautiful. I'm partial to Timpanogo(/a)s. But IMMHO the mtns of the Sierra Nevada, the Canadian Rockies, the North Cascades and the Cascade Volcanoes are among the more beautiful places on Earth. Although if you are from Mississippi and Oklahoma then pretty much anywhere is going to seem like Xanadu in comparison. ALthough I think one thing that really makes Utah attractive is the wild moonscapes of Southern Utah which gives some contrast to the Northern Mtns. There are some isolated spots with desert like that and the wildness but no other places in the US has the odd sandstone formations like that. Very cool.
I've spent some time in SLC as my uncle lives there and my dad used to live there and Ive spent some time around Mormons who were friends elsewhere. I don't think that they prostelitize as much there because anyone living there is either Mormon or already pretty well exposed to them.
Buddy up to them though and you'll find that some are on autopilot but there are a fair number, especially women, who are annoyed at lots of LDS stuff.
I think they drive a lot of people in education crazy though because that is such a state function and they meddle a lot. It gets real political. And they try to convert but they also really do exclude others.
Pretty much all of the Intermountain West has excellent housing prices since most of hte land was vacant and useless desert even 50 years ago. Certainly one big advantage over hte Pacific NW.