I am Old, and I can tell you that this is true
I don't know if it's because I didn't have access to the internet until I was 11, or because there still weren't many people on the internet back then (and of those few online, even fewer had a scanner, & there was barely such a thing as a graphics tablet), but for the most part I never felt ashamed to share my scribbles online - indeed, I began doing so as soon as I had access to a scanner and the rudimentary knowledge of HTML needed to build a Geocities site.
Very few people saw my scribbles, of course, so this might have contributed to the lack of shame surrounding them, but anyway -
I've obsessively saved almost everything I've ever made since the age of 5. There's one piece in particular that's lost, and I never figured out exactly how it became lost (my theory is that it somehow accidentally ended up in a box of papers for recycling), and I still think about it a lot and I'd give anything to have it back.
It was a video game manual for an imaginary game called "Hydro-Mania," a 2D platformer where you played as anthropomorphic fire hydrants. There were several different sizes and shapes of hydrants, each with their own special ability - there was a tall one that could jump higher than the others, a short stubby one that could squeeze into smaller areas, and so on. That's really all I remember! I'm not sure how old I was when I made this, probably 7 or 8 (it was definitely before we had the internet).
And so if I, someone who never threw ANYTHING away, can mourn the loss of ONE piece of my childhood art...imagine how you'll feel if you don't hang on to anything?
It's all a part of my journey as an artist!!! I love being able to look back and see how far I've come, and also to discover things I'd forgotten about and go "ha ha, wait a minute, this was actually pretty good, considering???"
So yeah - save your work, always πππ