My kitty is indoor/outdoor. We live on a lovely quiet private estate where he has acres and acres of people free fields to roam although he always stays close to the house. We don't have any predatory animals around either so I am happy for him to be out. He loves to run around and come and go as he pleases, he's happy and fit and healthy. I never let him out when I am not there though and I would always keep him in overnight. When we go to bed, so does he!