Not to sound like a douche, but I've become more picky in regards of what I'd save and what not, resulting in an overall higher quality of my /e/ folder. Probably around the time I started lurking on 4chan in 2007/2008 I'd say. Not that I dislike my old pics, but at this point they're more like "well, it's nice, but I've seen this or a million other pics exactly like that" at this point.
Some other pics I still like a lot. But you can tell that also artists' styles, tools/software and knowledge have evolved (mostly) for the better in the last 15-20 years.