I tried using Struts for a project a few years back and after I realised how much easier it was to maintain the codebase with a proper enfored separation, I never looked back.

Though I found myself, in many cases, writing more code than I would have without a framework, I found the maintenance benefit more than compensates.

Things have got more complex in recent years with more and more complex interaction logic embedded in webpages with Javascript and i'm not sure i've seen many frameworks address this.

Admittedly, there are now better frameworks out there than Struts (this was Struts 1) and I think i'll have to do a bit of exploring for my new project's website but we'll see.