I believe that photography is a smart long term investment. Time is passing by so fast that you don't even realize it, and when you look back all you have are your memories and stories. Sometimes a good joke that made everyone laugh is the best memory from an event, or a kiss on the cheek while nobody was looking, or a tear of happiness on your spouse's face while walking on the beach. How would you like to have pictures of those raw moments? Documenting your life is the best investment for so many reasons, the most important one would be that just by looking at a photograph you can travel back in time, feeling  that emotion that you were feeling in that moment, smelling  the air exactly how it was, feeling the sand between your toes and hearing your loved one laughing. If this is important to you and will make you happy, than you are in the right place!