If they're not old enough to read the subtitles they're probably not old enough to follow the story of Star Wars. Just seeing the spaceships whiz by and seeing the lightsaber fights is enough for them.

Too many movies get dubbed, countries like France and Germany dub every foreign language movie automatically.

Here in Belgium we only dub some children's cartoons and movies, I watched Star Wars when I couldn't yet read and understand everything they said in the movie but I still liked it.

Every time I switch channels and accidentally hear the Simpsons or Star Wars in French I crinch.

If you don't want to watch the film as it was intended, don't watch it at all. You might as well watch it with your eyes closed or with the sound muted.