> power supplies come with up to 13-year (or longer) warranties
Unfortunately, those warranties don't tend to cover the rest of your components, if the PSU happens to take out a motherboard or GPU as it dies, you are up the proverbial creek.
Having had a couple of older PSUs die spectacularly, I'm not risking re-using a ~$100 component, on the off-chance it fries ~$500 of brand new motherboard/GPU/etc post-upgrade.
Why do people think newer components are more reliable? Is it the same thinking that says newer cars are more reliable? Newer computers? (The answer to all is no.)
Clean the dust out of your PC once a year. It'll last longer than it has any right to.
> Why do people think newer components are more reliable? Is it the same thinking that says newer cars are more reliable?
I'm not making any statement about newer models being more reliable, I'm saying that electronic components age, and hence the risk of failure goes up over time.
If you buy the exact same model of power supply, but one that is manufactured 5 years later, it will (statistically) be more reliable than the unit that's already been in use for 5 years.