Alright, let’s get this out of the way first: kicking down a door is not the best option for opening a locked door. It will damage the door and cost you lots of money to fix it. It is better to call a locksmith, pick the lock, or attempt to crawl in a window.
But let’s say it’s an emergency. You’re in a burning house and you need to escape and the door is on fire. Or your loved ones are in a burning house and you’re locked out. You can’t stand there fiddling with the lock, you’ve got to break it down! Or perhaps a loved one is stricken with a medical emergency and is locked inside a room or in their house. What to do? Be a man, dammit! Break down that door! You know you’ve always wanted to.