Do you think Servlet Programming is even Necassary?

I pick up Java Server books look at them and they tell you and show you 
how to write Servlets. I personaly I have never had to right one. I made a 
fully functional E-Store with just jsp and javabeans. If I got some 
strange error I would take alook at the servlet. but other than that I 
never sat down and coded one of them.

I understand fully their place in the java server world but do people 
really need to sit down and hand code them? is there some hidden use for 
them I have used them for? please let me know, what I'm not getting or 
missed.