Nope! Just decided to be a disappearing asshole for 36 hours and come back like nothing happened.
edit: thanks to all for the different perspectives. he is fixed, has all of his shots, and has his own temperature contolled kitty condo (aka the laundry room) that we put him into every night. we have a pretty good network of neighbors and pieced together his activities via security cameras. he's a mouser for sure and that is his job until he decides to retire.
You forgot the risks of spreading feline diseases and parasites.
Are you saying outdoor cats in the UK are just as long lived as indoor ones, and don't do any irreparable environmental harm? I don't think the stats will back you on that one.
Which part of all this is supposed to make letting your cat outside seem fine? You basically made list of reasons to keep a cat indoors if you care for its health, but started off with "it's fine if you have a garden" which makes no sense. Unless it's enclosed in a cat-proof way?