text: Hhhmmm, all valid points. It is a question I hadn't thought of on the "wooden" benches how much has to be wood for it qualify. A lot of supposedly wooden benches are more like iron bars with wood to fill in the holes. It's almost impossible to find anything man made to sit on that's purely wood around here anymore.  As most of the wooden benches and a lot of the metal ones have long been destroyed by vagrants. Present company not included.
  
  I agree wood is probably the most comfortable. metal works good as a zombie poking rode though if you can bend it off. Cement benches, i'd probably hide under one in a nuclear blast, but that's about it. So, I guess adding the details help. 
  
  Btw, how do you know that brain surgery wasn't really a full lobotomy (do they have half lobotomies?) and this isn't all a horrible dream?