Glenn, Paul,
I don't think that walkers are better or worse. Who would think that?? But it is true that since the introduction of carts, in the US (not the UK, not Australia), there has been a movement to marginalise the walking golfer. It's hard not to feel like the underdog. There has been, over the last few years, a slight reversal in this trend, but as an illustration, if we were to try and play (God forbid we'd want to) the courses that the PGA tour visits, we'd find that a good half of them wouldn't allow walking. I think it is quite above board, and not in the least self righteous to point out that if the PGA Tour, and the USGA wants to tell us that Casey Martin can't ride, and that walking is an intrinsic part of the game, then they shouldn't hold their events at courses that don't allow Joe Nobody to walk. That is hypocritcal.