My anecdotal experience over the last 15 years of personal PCs. I've had one case of Corsair memory which went faulty after a year (was replaced without questi

My anecdotal experience over the last 15 years of personal PCs. I've had one case of Corsair memory which went faulty after a year (was replaced without question by the supplier) and around 3 PSU failures. However, on the 3 times I've done upgrades (typically motherboard + RAM + CPU) in that time I've been able to keep my existing PSU without stability issues. So I wouldn't say it's "insanity" to keep your current PSU when upgrading, but based on your experience if I had stability issues it may be the first thing I test.