The biggest thing for me is ISU athletics.
After that, shoreline access to lakes and rivers. Every place has a boat launch, but without a boat most easy-to-get-to places are surrounded by houses or farmland. The high alpine lakes are a couple hour drive on minimum maintenance forest roads. We finally bought some kayaks late last year.
We live in a relatively rural part of western WA so we can still get a lot of the Iowa ag and solitude feeling pretty easily. Life is pretty easy going here.
I traded pork for seafood and am happy with it, but I still buy a slice of Casey's pizza whenever I'm back.
I prefer the temperate WA weather. It's 73° and sunny outside right now. And it rarely gets below freezing in the winter. Green year round.
Frankly I'm not sure there's anywhere else I'd rather live than where I am. We just road tripped home for vacation and I asked myself that very question as we drove through IA, SD, WY, MT, ID and eastern WA.