Got two cats here, both are allowed freely outside.
One of them is a hunter, but spends most of the day sleeping in the house (most of the night too). He only ever goes out for maybe an hour or two a day to hunt and catch something. Funnily he used to spend a lot more outside (in summer he used to be gone from morning till night), but that was a couple of years back (he's 5 now).
The other used to prefer the house, but now spends almost the whole day outside only comming in at night to sleep or for food during the day. But he doesn't hunt, and is infact afraid of mice (wierd I know).
So yer, go figure.