I certainly agree. I'm really not arguing for writing your own engine as anything other than an excellent learning exercise. I've written my own engines and ren

I certainly agree. I'm really not arguing for writing your own engine as anything other than an excellent learning exercise. I've written my own engines and renderers (both forward and deferred) and I'm more than happy to rely on whatever engine we happen to be using at work to solve most hairy issues for me.