Java Web框架真的值得麻烦吗？

I'm relatively new to Java programming (About 2 years) but not to web development. I started out with HTML and ASP (pre .NET), and have recently started messing with J2EE. I feel like I have a good grasp of JSP/Servlets (I find them to be similar to ASP) and have recently begun working with JSF and Facelets. Although I can see why people would like JSF, I find it to be a huge burden and it's actually slowing my development times down. I imagine this is due to the learning curve, but I often find myself thinking that I would be finished with a page/task if I were just using JSP/Servlets. I'm relatively new to Java programming (About 2