If you suspect your mattress is making you sick, leaving you in pain or discomfort, or making you feel unrested, it’s probably time to replace it. Generally speaking, the lifespan of a traditional mattress depends on the type of mattress you purchased, the size of the sleepers, and the amount of daily abuse. Most mattresses wear out in about 7 to 10 years. On the other hand, Avocado Mattresses are handcrafted from durable natural materials and come with a 25-year warranty.