What do I need jQuery for?

What do you think of killing jQuery in the public facing WP site? Isn’t it useless and making for slower page loading? What’s the best way to get rid of it?

jQuery is loaded by the theme that you use and not by WordPress. The theme must be modified to not load jQuery.

Useless? not sure. It is very useful. Many themes’ UI elements and even design elements may depend on jQuery.