As future is known then people tend to find answers for the unknown.Or because love love is blind and they do want to fall in pit to prevent that is better to know in the future.
because they are very courious and they want to know what it is written for them and if it is something bad they want to prevent it! but i don't know if they can!
Future is always curious. People want to know future because they would like to know whats waiitng for them. So that they can better prepared for the worst and best situations :)