I never listen to Marathon Talk, but i get the hurt vs suffer comparison, although I dont look at marathons as an aerobic game, they are about trying to hold an easy (at the start) pace which gets harder to hold as your legs get increasingly more tired, but its never on the aerobic rivet like a 10K race, its about keeping tired legs going strong. So how fast someone can run reps doesnt really seem relevant to me. theres folks I know that are better runners than me 364 days of the year but I beat them on VLM day (cos I do more marathon specific work than them IMO, and I'm up for it more than them when it gets to fixing bayonets time at 18M).
For the likes of me TR (old and female) the reps/intervals are probably the most workout I do. I can bang out 20 milers every week and add a bit of MP into them and I enjoy them even more but I need the faster stuff (faster than MP) to build up my overall speed. Without this I simply wouldn't have got any faster.
In my first few years of marathon running (marathons 1 - 8) I ran every marathon between 3:43 and 3:31 but couldn't get under the 3:30. I'd never really done speed work because I knew better than what everyone was telling me
- I didn't need it because I had such a good endurance base.... Finally I bit the bullet and followed the P&D so introduced speed for the first time. I ran 3:28 and realised that I needed to do loads more speed work to get any faster. I'm now on 3:20.
I think for those who are naturally fast (you) then the speedwork is a lot less important.
Just out of interest what is your marathon history?
Edit: 21 easy miles (8:30) today. That's the 5th of the campaign. Can I put my feet up now. 
Edited: 16/02/2013 at 13:38