I'm not as experience as many of the forumers but this is my stance for my cats. Yes dear this is not answering your questions. Saje nak menyibuk.
Base on my feeling, observation and not so educated guess I think phycologically cats will be more happy outside. I myself feel board staying home sometimes eventhough I can roam my house like nobody business
. I think same goes to my cats lah kot. In my opinion they are more happier outside..
On the otherhand it is dangerous out there. Some fella might cat nap them. Or worst if they bring home deadly virus home and share it with other cat at home. Macam FIP dry or wet and Feline AIDS tak de vaccine...
My Maya one twice got out...a breakout actually. But she is afraid of outside nie. Kejap jer dia balik. Less then one hour.. hehe. ..tau pun takut!!!
Don my beloved hero nie always outsmart me to find a way to get out. Dia boleh seek celah kaki, rip the plastic net, jump out of the 6 feet window ( bounce dulu to something else...)...Previously I'm very piss off dengan dia punya preferences to go out nie. Penat aku nak jaga. Pasal when he is out pastu bila dia lapar dia balik... pastu kena qurantine dulu if I got time to bath him. Once his out dia confrim kena mandi dulu before to roam back in my house. Just Imagine kena buat this 3 times in a row on a busy week.... Now I still do the quarantine and bath tapi without the piss off. I understand that stuck in the same house for 24x7 is darn boring for an active cat like Don... If he's manage to get out I just pray for his safety + worry. Tolonglah jangan kena langgar because this is too grousome for me...
Macam spay gak, I took the lesser of two evils. I think lagi banyak goodness in indoor dari outdoor nowdays. Ok lah I'll answer your question now...
Marjan vote indoor for Ashley