My wife and I enjoy shows like House Hunters occasionally. We like watching house tours plus they discussed the pros and cons of each home and how they would renovate or remodel the home. Plus, you get to see one of the houses redecorated (even if it was just staging).
Sure, the buyers and agent might be actors, but the houses are almost certainly real (it seems much cheaper to just rent and stage a couple of houses to film in than to build multiple rooms just to get 10 minutes of footage).
Also, reality shows have inspired some amazing progress in documentary editing. I don’t think shows like Last Chance U and Drive to Survive would have been half as good without it (even if they are not educational or totally accurate).