If you are in the market for a causal camping vehicle, you might be tempted to get a full-time camper conversion or get an actual Winnebago, but I think you'll find a few big negatives. First, is that if you don't have covered parking, it will upset your neighbors (particularly in parking restricted urban areas) and second it is worthless for anything other than camping. And thieves know they are easy pickin' because of minimal security features and are typically filled with easily fenced stuff. What you REALLY need to get for camping is a heavy duty work truck. Like this 2005 Ford E350 Van here on eBay offered for $6,800 buy-it-now or make-offer located in Richmond, VA.
I have to admit that a work truck is also a big target to potential thieves, but proper camoflaug is important. Don't put a sign on the side that says "Bob's Hypodermic Needle Supply & Hydroponics"...instead put something on the side like "Danger, Pesticides", "Animal Control" or "Hank's Bible School" on the side. Regardless, you valuables will be somewhat safe with the industrial lock boxes scattered around the outside, but any criminal with a crowbar will find his/her way into this tin can and steal your sardines.
The inside is workshop-ready, but you could convert the benches to sleeping arrangements -- and who needs a living room in an RV anyway, you should be eating/living outside most of the time and only using the vehicle for moving and sleeping. It might as well be simple, rugged, and industrial.
See a better car for weekend getaways? firstname.lastname@example.org