Berlin vs Munich?

We liked Berlin far more than Munich because we're very interested in World War 2 history.

Without any other context info about the rest of your planned route, I would say Berlin. Especially with young adults, it's "cooler" than Munich. And more historically significant in my opinion!

Never ask a Berliner for a neutral statement on that question. ;-)

Vote for Berlin, also especially for your young adults.

Both are great cities. I love vanilla and chocolate ice cream just like I love both cities.

Berlin needs more time to see. Love the Pergamum Museum. Munich has nearby places to visit like Garmish/Fussen and Berchtesgaden/Salzburg. Also, Herrenchiemsee Palace.

With kids that age I would go for cool Berlin.

Berlin, hands down!
10 times more interesting than Munich. For young adults and for old adults.

There is more to see/do in Berlin than in Munich.
Been twice to Berlin and would go again.

I've been to both for 5 days each and loved them both, would be happy going back to both. Plenty to see and do in both with good day trips from each. However, with young adults I would definitely recommend Berlin.

A few questions:
1) what are your interests?
2) is the city you choose the only city you’re visiting?
3) How many days?
4) what time of year?

Just visited both of these cities in March and my very favorite experience was a soccer match in Munich (FC Bayern Munich). That said, Berlin was the more interesting, more entertaining visit. More to see and do. It’s no knock on Munich, which was also a lot of fun. Berlin competes with just about any city I’ve been to, including “biggies” like Rome, Paris, London.

Munich is more charming IMO. Berlin for interest in more recent history, Munich for past centuries.

If you are limited on time you won't be able to do and see everything that either city has to offer, so although Berlin is much larger and offers more sights/things to do that should not be a criterion.

And advantage of Munich is that - if time allows - you can make a day trip to the Alps (Garmisch/Zugspitze).

Berlin. No contest.

Munich has things to see and do like any city would, but its big appeal is as a gateway to the Alps. Berlin is like no other city and has SO MANY unique things to see and do, it has such a great vibe. History, night life, museums of all kinds, landmarks . . . .

Both Munich and Berlin are great to visit, but if you are short on time, then it's better to pick one city to explore.
Berlin is much bigger than Munich and more diverse. Munich, on the other hand, has a lot of nice parks, beer gardens, and beautiful castles.
Here is a detailed comparison between Munich and Berlin:
https://www.bigworldshortstories.com/munich-vs-berlin/

Hopefully, it will help you to choose which city to visit.

Been to both several times. Both are great but if you can only do 1, it's Berlin for me without a doubt. Berlin has a lot more to see and do. If you are interested in WW2 or Cold War history, Berlin cannot be beat. Berlin also has far superior nightlife if that is of interest to you or the kids. If you need specifics, let me know.