I worked as an apprentice locksmith from the middle of high school until I graduated college - we always told people, standard locks should be looked at only as a way to inconvenience a person from breaking in. If someone really wants to break into your house, they are going to; it's only a matter of how long it takes them to get in, and through what method. Granted, it was at this point they would ask about security systems, which we also installed - but the general principal still stands.
