Not strange at all, there's a reason movies are they way they are. It depends on context, there are times to put the punchline first, there are times tell the story backward.

For that matter, there are classic examples of movies that tell the story backward, or give away the ending first.

There's some difference between headline first and punchline first, but either way the real point being made was turn it into a conversation by giving the shortest possible answer first, and letting the other person request the backstory as needed. Make sure they're doing some of the talking and driving the direction of the story. Make sure they're interested and controlling the direction and amount of your narrative.

OTOH, if you're in a setting where it's expected that you'll take ten or forty five minutes to tell a good story, then a narrative arc that increases tension for a while is probably a really good idea.