Even if it isn't evicted very often, the first time it is loaded, it will be ~3 times faster, it will take up less storage thus better for others and (probably) easier to render.

First impressions matter, and caches do not help with that in the slightest.

Sad but true!

Here, the sad response to slow web page load times on mobile is normally "just get a modern internet connection!" or "use 4G" etc. but if we had desktop apps that took forever to load, you'd hear complaints pretty soon. A response of "get a faster computer" isn't accepted there, and accepting all this boatload of javascript isn't good either.

I can't remember the link but the average page size has been skyrocketing the past few years, which I think is sad. All that network traffic, electricity usage and CPU processing just for the same jQuery code to be flung across the Internet a billion times.