Civil War was a great example -- there was no real "right" or "wrong" on either side, and it was thoughtfully presented that way. Neither Cap nor Iron Man was the "bad guy".
I know I love a movie where the audience has no clue who to root for and identify with.
Actually in the cinematic they’re going in kind of the opposite direction. DCU is super dark and gritty where as MCU is keeping it fun. They might be handling adult conflicts, but the MCU makes sure they’re handled in 4 bright colors.
Actually, it’s the opposite. Marvel Studios films are pretty much suitable for all age groups. Warner’s DC movies are pretty bleak and pursue realism to the point where they are full of moral ambiguity, death, sex and destruction and not fit for children to view.