Honestly, Indoor. Would you like if your parents kept you outdoors? Although you probably loved outside would you really want to LIVE there?
(not to be rude) but indoors are much more loving and affectionate. Also for them to be outdoor theirs a greater risk of something killing them or harming them, them getting hit by a car, or a stray dog jumping your fence and depending where you live, a dangerous wild animal as well. Plus if there declawed.
I cant really gove you an answer,but what I can give you is a way to a solution, that is you have to find the anglde that you relate to or peaks your interest. A good paper is one that people get drawn into because it reaches them ln some way.As for me WW11 to me, I think of the holocaust and the effect it had on the survivors, their families and those who stood by and did nothing until it was too late.