jQuery is really useful, and there are are ton of times where it is the best solution for programming on a web page. However, there are times where it's not appropriate and a pure javascript solution is needed. However, if after someone has given you a jQuery solution and you say "I need a pure javascript solution, no jQuery" - the responder immediately proceeds to interrogate you on why you possibly wouldn't want to just jQuery.

To those people: THERE ARE REASONS