There are certain collectible items for certain people. Often these are what make them happy and satisfied. The collection gives the collector some excitement. Oftentimes it reaches the sense of addiction that even when there is no budget, when a specific item is seen, that item will be bought and sometimes more important things will be sacrificed like food or bills. They will eat less or delay paying bills.
Others collect with wisdom, though. While most collection will mean nothing for others or for the future, the practical people will think of something to collect for the purpose of “saving” them in the future like if women buy silver coins, it can be stored easily without care for delicate parts and can be sold also later when needed. Like myself, I have collected old paper bills and old coins. I stopped collecting when my 11 pcs of Arrovo misspelled bills were stolen.