It's not hindsight: The Nationals were wrong about Strasburg
Last year, the Nationals shut him down in the beginning of September, forcing them to go down the stretch and make a playoff run without one of the best pitchers in baseball.
They ended up losing in the NLDS to the Cardinals, and they gave up a combined 29 runs in their three losses. It's no guarantee that Strasburg would have give them the edge in that series, but there's no doubt that they at least would have had a slightly better chance.
The rationale behind the shutdown was that the Nationals wanted to prevent injury, since Strasburg was only a year removed from Tommy John surgery.
Basically, the Nationals sacrificed a potential World Series run because they wanted to baby their ace, with no guarantee whatsoever that; A) it would actually prevent injury, and B) they could someday get back to the playoffs and (hopefully) win a World Series.
The main problem is that the Nationals could have managed Strasburg's innings without keeping him on the shelf during the playoffs.
Now, despite the extreme caution that they've exercised with Strasburg, he strained his oblique and had to be taken out of last night's game against the Braves.
The thing about pitching is that there is always an inherent risk whenever you're putting an incredible amount of stress on your body for 90+ pitches every night. Strasburg might hit the DL now, and the over-protectiveness from last year doesn't change a thing.
Sometimes you just have to go for it when you have the chance. The Nationals didn't, and they might never have another opportunity like that. You just never know.