Thanks for your comments and ideas. As I said, I did make it to Tippecanoe State Park. I also have 2 other State Park sites reserved.
It honestly surprises us that there as many people liking the private campgrounds. We found them not to offer that much more than areas we can find around the house.
State parks offer to us, much more. There's always fishing in really beautiful areas that seem reserved for only the DNR. No private campgrounds have that nice of areas, and most just have man made fishing ponds. We enjoy nature and love seeing wild animals we just don't have around most busier areas. Hek, we had a red fox come right to our campsite looking for scraps. A bit to tame but was nice seeing it.
We also love hiking on trails that are longer. Most private parks have limited trails with not much scenery on the way.
We just love State and National parks. Honestly don't see much use for private parks with the little they offer and the high prices. They are nice for quick, close trips just to get away but we always go to State parks on more extended vacations.
I just wish there were more closer State parks so that we could go more on weekends.
Our county parks don't offer camping and either do the majority of the fair grounds. You can schedule Scout tent camping trips for those areas though, but they're not open for regular camping, tent or RV.
I did do a search and the State of Indiana offers 4 Parks that offer only a handful of full hookup sites. They are either new State Parks or are Reservoirs. As I said, only 4 in the entire State.