What do you do when you want to keep your front door a formal entry (read: no kids backpacks thrown haphazardly, no piles of unused shoes littering the floor), but you don’t want the only other access filtering through the garage?
A second entry!
I also call these friend and family entries because those folks don’t need you to put on a front like your house is clean all the time. The mudroom is spacious, they have a place to toss their coats and shoes, and they probably already know the key code to get in.
The secondary entrance also serves as a spot to let the dog out (maybe add in a dog wash for those dogs that will just jump into ditch water any chance they get).
I can’t spew enough love for the secondary entrances!