I have two rescue Ragdolls and neither of the go out.

They are both very happy indoors and they have lots of toys,ect to play with.
I also make sure there is windows to look out of scratching posts to climb over and lots of water and food.

They are both very happy and loving cats and even if I leave the door open they have never shown any interest in the great outdoors, Have to confess I am happy about that as I would not want anything to happen to them