Madara's intelect is quite low

[Sageof7Path]

1 minute inside Infinite Tsukyomi could mean 72 or more hours...
after that the Infinite Tsukyomi has been cancelled (when madara dies) or something... all people will have been brainwashed and there will be no such thing as cruelty, war, suffering or nothing like that.

i bet that's his thought!

It has to be or he would be the biggest a**hole in the history of anime.