Not to mention Nadal has often been involved in Davis Cup finals the week following which he seems to care more about (eg. skipping WTF in 2008 to be fit for DC).
I wouldn't be surprised if this is one of Federer's very favourite tournaments, but it's hard to take everything the players say about such matters to heart, if you did you'd have to believe that Nadal has about 15 different "favourite tournaments".
Nadal fans need to come out of their silly little worlds. 1500 points potentially is a lot and if Nadal were to get them I don't for a moment think any of the Nadal fans would shoo it off as a meaningless event.
Nadal hasn't been able to win it, be it the surface or the indoor conditions, if he can't play on the most common surface in the sport and indoors which the crowd really enjoy, maybe he should stick to his 250 and 500 events in south america on outdoor clay.
The WTF is a proper event, always well organised, brilliant structure and a fitting way to end the season.