To me, Star Wars brings out the kid in all of us if we let it, even the first two. The ewoks don't bother me. I like the part with the 3PO bedtime story when the ewoks show that the grumpy Han Solo is actually soft at heart:)
I think the part with Han about to get cooked and eaten is hilarious.
I also think that people who don't like the ewoks may not realize that this is a tribute/sendup of classic b&w adventure movies with cannibals.