My biggest regret of my gaming youth was thinking "Basic" D&D was somehow inferior to "Advanced"
D&D. Heck, I didn't even own Basic until I found a table of remainders with a notch cut out of each box. It was the Moldvay edition of Basic, and even then I had no idea of the gem I had in my hands.
It wasn't until I got older and returned to gaming from a prolonged absence that I saw the true value of Basic and the clones that emulate it. Sleek, streamlines, un-bloated and not needlessly complicated with rules we ignored in AD&D because we simply couldnt understand them, Basic was a breath of fresh air.
If I could go back to the days of my gaming youth, I'd make sure I appreciated "Basic" D&D for what it was - an excellent version of the D&D rules that was needlessly dismissed because of it's "Basic" label.