My only regret is that I didn't replace my deadbolt years ago. It was easy to install and it is great to take the dog for a walk or go for a run without having to carry a key. No need to replace all of the locks or get anything rekeyed. It iwas easy to set this one to work with my existing key. When family comes in from out of town, you just set a code for them for the weekend and they can come and go without worrying about duplicate keys. Awesome!