I believe in an ideal world, every indoor cat would have a cat-door leading to an outside area tightly enclosed by a cat-proof fence so the cat could come and go as they please. Of course, this is not an ideal world so we have to make due with what we have. In our case, I try to let the cats outside for a supervised “recess” once or twice a week.
I think being able to run around outside, eat grass and soak up the sun is good for them. I also think there are many dangers outside which is why I won’t let them out unless I have the time to make sure they stay close to the house. It can be difficult to watch them when both cats are out at once but Rose was out there yesterday for a second set of eyes.
They really enjoyed their time in the sun and both were in no hurry to go back inside when we tried to collect them.