I watched this as a child. I loved it.
Now, as a 51 year old bloke, I still love it.
VERY dated animation by today's standards, but a bloody great film.
My only issue is the repeated use of the same sequences regarding the 'battle' scenes, but I found it really likeable and there are some hugely funny runs in the film, particularly with the gasmask wearing goon troops.
The dialogue is excellent and, let's be fair, for the time it held a good story line.
For me... well worth a viewing.