I lock and remove keys and put them in exactly the same place each night so that myself and/or OH can grab them if there is a fire. They are out of view. I take them out as someone could just put the window through in the door and turn the key and be in in a jiffy.
They say leave your car keys downstairs, I say if I hear you downstairs the thing I will be ripping off you will not be my car keys!
We take all our keys out when we've locked up. Our keys always go back to the same place in the house, otherwise we'd lose them. The car keys are in the same place.
ssssh, Planky, the number of times I've tried to unlock the back door to let the pooch out between 4 and 5 am, only to discover it's not been locked at all in incalculable (or whatever the word is ☺ )
Porch door locked, keys out, so that no-one can pinch them through the letter box,
Front door ( which is on a 90 degree angle to the porch door, and has no letter box) door locked keys left in it.
back door locked , keys in.
conservatory, door locked keys out, dont know why, just always been done that way.
Leave in the kitchen door as it is a wooden door. Remove the back one as it is a glass door a I feel someone could break the glass panel and use the key to open up.
Take mine out in case any of the family need to get in the back / front doors,but leave the conservatory one in. Up till a few years ago none of our doors were ever locked, sign of the times now.