And then the server wouldn't know what the specs of your browser are and either send you useless pages or not send you anything at all. The browser is designed

And then the server wouldn't know what the specs of your browser are and either send you useless pages or not send you anything at all. The browser is designed to let the server and client side scripting languages know what it is and what it's capable off. There is simply no scenario where you can have a usable internet without sending any parameters on what you want to the party owning the website. It's like trying to use the internet without using TCP/IP...