**Context:**
I am astounded by the number of front end developers that hack at HTML, Javascript and CSS all day long and that **ignore** tools like jQuery ( *or other equivalent helper frameworks* ) and **refuse** to use them. I am not talking about JavaScript gurus, I am talking about in the trenches every day Joe production developers. I get a lot of arguments that are more like excuses or personal opinions that I don't think have any technical merit, I want to make sure I am not missing something.

**Question:**
What are some empirical technical reasons not to use jQuery?

*I am not looking for religious or dogmatic arguments or subjective opinions "like some other framework is better", consider jQuery the straw man for all comparable frameworks in the question.*