I have had my mattress for over 15 yes and it still is like new. Does it ever disintegrate or break down. If it is like this now don’t think it will need to be replaced. Any thoughts?
Hey Side sleeper 57,
Welcome to The Mattress Underground 
! Thanks for your question.
That’s great that your Tempur-Pedic is +15 years and still going strong! Generally speaking, a mattress will need replacing at some point, and each has varying life cycles making it impossible to predict when its replacement time would occur. You may find Phoenix’s article, “How Long Will a Mattress Last?” interesting for learning more about a mattress’s durability and useful life. As long as you are sleeping well and experience no alignment or pressure point pain, continue to enjoy your mattress’s comfort without worry 
.
Thanks,
Sensei