Board Thread:Naruto Discussions/@comment-5110462-20140507152631/@comment-1512913-20140508090410

That's a misconception. Madara got the Rinnegan in the last days of his natural lifespan, but that was before he attached himself to the root-spine thingy, which allowed him to live many years more afterwards. Remember, he gave the Rinnegan to a very young Nagato, but Madara died when Nagato was an adult already.