Can't give just one good reason. There are prairies, mountains, lakes, caves, pro sports, entertainment, fine dining, You can find almost anything you want or need in Missouri.
I have lived in several states including MO. I think the best thing about Mo. is the people, I have never met a more generous, kind, helpful, laid back, group anywhere in the good ole USA
You should visit Mudfest it is about 30 miles from St Louis in Robertsville, MO. They have the events several times a year. Totally worth visiting. There are many mud pits ranging in depths from 2ft to 5ft, a couple of car climbs, many trails, long climbs and tug of war. There are usually about 2000 plus people in attendance. If you look online you can see some pictures that a bunch of people take every time they go as well as some videos! - JWD