your safe needs to be a fire safe to protect the contents from fire.
if the safe is small I will just pick it up and take it with me, if your safe is large I'll just use an axe and with 2 good whacks I'll have a hole punched in the side large enough for my meat hooks to get in there and grab the contents.
HIDE your FIRE safe, that way I can't find it and if your house burns down your stuff will be ok.
oh don't hide it behind artwork on the walls, I rip those off the walls as I walk by them in your house because I know that's where most people hide them, next I look in the freezer, and I also dump out all your cereal boxes all over the floor. I quick swipe with my hand knocks over all your canned goods, so if you have one of those 'can safes' I can tell because it doesn't weigh the same as a can full of soup.
when you're gone I'll break into your house and the alarm will go off, I'll only spend 5 minutes in there before I take off, that is all I need
if you are smart you'll leave out in plain sight a broken laptop that looks newer and $50 in one dollar bills in a big wad in your dresser drawer... I'll grab that and be satisfied.