I love all of the ToHo movies - Mothra, Godzilla, Rodan, King Ghedrah, etc. But Mothra has always been my very favorite of all time.
I do NOT like the English dub version, I much prefer the Original Japanese with English subtitles - the story is much smoother and makes a whole lot more sense before Westerners dumbed it down.
I highly recommend Mothra to everyone. It's not just for kids. It's a movie that the entire family can watch together and even learn something about history and life, in general.
A well made, well written movie that I have watched many, many times over my 63 years on this earth.