Are people seeing some huge benefits from paying attention to these symbols? I've been, as the kids say, "adulting" for some time, and pay no attention to them. I couldn't draw a single one from memory. If you showed me one, I'd only be able to guess at the meaning. All I do is not wash stuff that says "dry clean only" (it always just says it in text, I have no idea if there even
is a symbol for that) and favor cooler water & cooler dry cycles. I air-dry anything wool (if it's not in the "dry clean only" category).
Color-safe detergents have been the norm since my very early adulthood. I remember ads for it when I was a kid but by the time I was buying detergent, most detergent was color safe. I've never even bothered to sort by color, aside from keeping raw denim away from everything else (on the rare occasions it's washed at all).
What am I missing out on? My family's clothes seem to last just fine. My wife pays even less attention to this stuff than I do, and everything seems OK.