I'm old enough to have seen fads, social movements, come and go, technology changing constantly. I've learned one must adapt, things always change, and one should be careful about what one gets used to, what one depends on. Sometimes you have a good thing, then it dissappears. What matters is how you respond. I've learned to prepare for emergencies, what would I do if this is suddenly taken away?
Reddit was where I realized the online world has changed a lot the past 2 or so decades. Back in the day, we'd actively curate, use rss feeds, find a bunch of sites we liked, and create our own customized feeds.
But by the time of reddit, we were no longer doing that work for ourselves. I started to notice a pronounced echo chamber effect, less variety, seeing same stuff over and over.