Opinions will vary. I knew an old guy when I was a teenager that never changed the oil in his cars or trucks. Just the filter. His logic was that oil cannot be broken down. Must admit, his old Datsun truck was still running when he died. Didn't smoke either. Go figure.
Many people don't believe in changing transmission, rear end, power steering, brake fluids. They just drive it till it needs a new whatever.
Oh my gosh, the oil though?
That's insane. I didn't change the oil on a motorcycle I had and it blew up while I was riding it...I'm guessing it was related!