I like jquery. I only do websites for data viz things so I don't follow all the frameworks and so on, I just want some nice D3 graphs and tabular reports and to have it be clear enough JavaScript that I can look at the math and maybe edit it. JQuery serves very well for that and for keeping me out of browser compatibility issues, although that seems to be less of an issue than in 2008 when I started with it.

> W3Techs still puts jQuery on roughly 66 percent of all websites and the overwhelming majority of those running any known JavaScript library

Fine for its time, should be fully deprecated today.