How long does a PC tower last?

I'm curious to know, just how long can we expect a PC tower to last? Is it a matter of years, or are there certain factors that can impact its longevity? Are there specific components within the tower that tend to wear out faster than others, and if so, what are they? Additionally, are there any maintenance practices or upgrades that can help extend the lifespan of a PC tower? I'd love to hear your thoughts on this topic as a professional in the field of cryptocurrency and finance, given that many in our industry rely heavily on powerful computing hardware.