I'm glad we have them both too! I must say I like them both. I know my statement seemed a bit... rushed?
I get everything you're saying. I grew up watching ONLY Disney movies and only watched Ghibli's works something like a year ago.
I just don't like where Disney is going. Right now they're just making live action remakes because they know nostalgics will go and see them.
I feel like their last works (when they started experimenting with 3D, and all those useless sequels) are especially made to please the audience while Studio Ghibli has had such a unique approach to both story telling and animation (correct me if I'm wrong but I believe Ghibli has never made a sequel?) that's what sold it for me.
2D Disney animation has a special place in my heart but growing up I found I liked Ghibli's works more. Anyway, that's just my opinion :)