Knowing your future is useless

I would strongly say that knowing your future is useless, I and u believe that there is a power which controls the nature me calling it ultimate power and people calling it god, This power has restricted us to know the future, I believe its for the good sake, I will make you clear why i would say "knowing your future is useless", we all know that if we practice yoga and meditation we can live a long life but still we don’t, also we know that smoking and drinks would spoil our health still we do it, this is an small thing which makes me say "Knowing your future is useless"