It annoys me practically to death that Pinterest has more UI latency than a full blown 3D First Person Shooter. And yes, I use Pinterest like a crazy person, get over it. There is so much great fantasy/sci-fi art on there.
But I wish modern programmers understood that speed mattered. We live in an era of frameworks and buzz words and stupid little open source tools and endless conversations about minutia that drives me nuts, but some of the most popular websites in the world run slower than DOOM on a 286. Why should I have to wait 800 milliseconds for something to happen after I click a link?
I tell you, I have already become a cranky old fart at the dismal old age of [REDACTED].