[Trailerpark Badass]

Yeah, and when the door isn’t answered, burglars assume no one’s home and break in, providing the opportunity for a good shoot and one less violent criminal.

[Blue Jays]

Yes, utilizing that more conservative approach would have prevented this moronic retired firefighter from earning himself a felony conviction.

You are correct. There is no good reason to eagerly open the door whenever the doorbell chimes.
The good news is that it is typically a salesperson, realtor, politician, or religious crew with pamphlets.

If unanswered, the vast majority will simply walk away.
Which is probably what this 14 y.o. boy would have likely done.