Good lord, no.
I moved from Kansas City to Richmond just 3 months ago. Believe me, Kansas City is not the Bible Belt. Richmond however... well, let's just say the local NBC affiliate here likes to preempt Scrubs with Billy Graham specials.
Kansas City is a very large city (around 1.6 million in total metropolitan area) and is very diverse. I find that the more diverse a city is, the less "bible-beltish" it becomes.
There is a lot to do in Kansas City. But, admittedly the favorite pasttime seems to be eating out a lot, and getting fat. With so many good barbecue and steak places, it's no wonder. There are plenty of great movie theaters there, but I would also recommend the Toy and Minature museum, the Nelson Atkins Museum of art, and shopping on the Plaza. There are some great sights to see. Without knowing what kind of stuff you're into, I can't recommend much more.
I also would heartly recommend that you not live in Kansas City, KS. It's really quite a cesspool of humanity. The Kansas side of KC is typically better, but KC north (on the Missouri side) is growing, and is quite nice as well. Overland Park, Olathe, and Lenexa are very middle and upper-class neighborhoods with great school systems.
There are also some really good game stores there. Tabletop games in Lenexa is located off Quivira and around 78th Street. They have an game room for games, and do a lot of Warhammer there. In Olathe, 31st Century games has a huge space and have a diverse selection of stuff at 135th St. and Mur-len. There are a few others as well, but those are the nicer ones.
Where will you be working?
There are some others on these boards from the KC area, Reddist, Kid Socrates, Urbannen, GMVictory, and a few others I can't recall their IDs offhand.