Naruto V: Eye See Your Sharingan and Raise You a Rinnegan

[LaZodiac]

I wonder if the implication is that Madara's grand and crazy plan was caused by the love of his brother (whose eyes he took)? Certainly, he never mentioned him much.

I'm pretty sure that's the idea, and Madara's just not telling us because he literally doesn't care to explain himself to us.