Playing with fire
How many of you have dropped your keys while trying to lock or unlock your door? We can not even count how many times we have done it ourselves, so to have this open drain placed right there is a bad idea. This person must be making new keys every week.
As if life was not hard enough, now you have to run the risk of not being able to get inside your house because of the chance of losing your key. The chance is very high, do not kid yourself, our hands are not perfect, and drop things all the time.