@seeingeyegod.
Everyone who has been driving for any length of time has had experience with a flat tire. Pain in the butt but no big deal. Several years ago, the Ford Explorer had issues with their stock Michelin tires. For no apparent reason, healthy seeming tires would suddenly go flat. This was a big deal. It was the cause of multiple accidents with injuries upto and including deaths. This is the concern with your psu. It's a known psu that can and most likely will take out other components when it dies. It doesn't need to be stressed, abused, over heated, under volted, it just dies. And not quietly.
While there are many who can appreciate not replacing an obviously healthy seeming psu, its only healthy today. That's not to say it'll be that way tomorrow, or next week or in 6 months.
$50 now is cheap insurance vrs $50 for psu, $100 for new mobo and possibly another $300 for a gpu