I've found it depends on the cat. I have one cat, Sherman, who is determined to get out and explore. He is quite successful at overcoming my preventive measures. Another feral adoptee barely ventures onto the "porch" I have for the cats. He seems most comfortable in covered and "safe" places. Most of my cats see quite content to observe the world from the window over the back of the sofa. My concern is not only foxes, but the ferals that "own" my barn and back yard. I hate to see the damage done when one of my kittypets gets out and the ferals defend their territory. We are also very close to an active road here. I've already had a couple of flat-cats delivered to the front porch with notes on them: "Sorry, I ran over your cat."
You're right, it does depend on the cat. When my cat was older, the only time she went outside was when my son was waiting for the bus. She'd sit on the porch with him, then the bus would come (he's special needs so it was the little bus) she would just turn around and wait to be let back in.
Cool. Cats can be pretty perceptive. I have cushions and boxes outside (on the porch) where my kitties can lounge. Worst thing is, I have to treat for ear mites after they start spending time outside. No fleas or ticks in this neck of the woods.
How do you treat for ear mites?
We've been lucky, have yet to see a single flea or tick this year, even with Hobbes running around the jungle all day. I'm sure the double-whammy polar vortex over the last winter had something to do with decimating the population for this year at least. Have been giving Hobbes the systemic flea stuff on the back of the neck but he's been clean.