Still just kidding, of course. Often they come in through the windows. Nothing more or less. All life, of course, is risk. All else aside, think of the tremendous risk our ancestors took by leaving the trees for the veldt, or even before that, the sea for the inhospitable land.
Risk is unavoidable.
Risk is not actually evil. Risk is something we live with and, eventually, die with. We can reduce risk, of course. I don't smoke if you don't count the Kuala Lumpur haze. Certainly I don't drink and drive, and I'm sure you're similarly sensible.