Life is a balance between hanging on and letting go. Most of us are much more comfortable with hanging on. There is a certain security in continuity. It is easy to lose sight of the fact that everything known was, at one time, unknown.
While every culture has its prophets and oracles, the future remains obstinately unknowable. Is that really a bad thing? If it were possible, would any of us truly want to know all that our future holds? As Alan Watts observed, a completely predictable future is already the past.