I have lived in and around Springfield, Illinois for 20 years now. There is nothing to do if you are a young adult. We have a very small, boring mall, a few other chain stores, some restaurants, and other than that bowling and movie theaters.
Down town is okay but it is mostly bars.
It is extremely boring and uneventful.
Crime is pretty bad, especially once you get away from the white oaks mall or the "richer" parts of town. Everything is run down.
There are not very many apartment complexes for those who are renting. The few that are on the market are there for a reason. They are way over priced or in a very bad neighborhood.