My personal favorite Batman film is one of the most fantastical entries in the series. Ironically it's also one of the least suited films to show to a young kid and is itself a reasonable question mark on the whole idea that this mythos is and must always be exclusively "family entertainment."
Or would you show your two year old kid a film where Danny DeVito nearly bites off a guy's nose and rambles on about filling women's voids, then later tries to slaughter all the firstborns in Gotham City and then devolve that scheme into "Let's kill EVERYONE"?
Because that's what Batman Returns is. I'd wait a few years before showing a kid that film, despite how much I love it. It's not realistic at all and yes, it's certainly just as goofy and ridiculous as it is bleak and horrifying. But a "For All Ages Family Entertainment" film it is not.
That's why we have a wide variety of different types of adaptations of Batman. Some crowds are better suited for Batman Returns. Others the Nolan films or Batman 89. Other groups still are suited for Batman Forever, Batman: The Animated Series and other DCAU properties. And then there's the brilliant group that is "Big Drinking Party with Friends" that best appreciates Batman & Robin.
At the end of the day, the fact is that Batman is adaptable to all sorts of different venues and age groups for any given circumstance. Primarily, yes, he is a "For All Ages" character- but that's not always the case, as demonstrated with Batman Returns. And we'd be here all day if we went into the wide spanning different approaches that exist in the comics.