Different people and cultures believe different things for the answer to this question. The meaning of life as we perceive it is derived from philosophical and religious contemplation of, and scientific inquiries about existence, social ties, consciousness, and happiness.
A long-term financial plan should include these elements. Time Horizon. A plan should look at least  five to ten years into the future. Scope. A plan should consider all appropriated funds, but especially those funds that are used to account for the issues of top concern to elected officials and the community. Frequency.
Retirement/savings plan statements. Length of time to keep, and why: From one year to permanently. 1  Keep the quarterly statements from your 401(k) or other plans until you receive the annual summary; if everything matches up, then shred the quarterlies.