The specific circumstances of that game were a total gut punch, but we were dealing with a situation in which we pretty much needed another run of total dominance, which wasn't likely. Hopefully we can still salvage the series and keep the .001% chance of hope alive. The Cardinals are pretty much a mess right now and I don't think they'll get past the NLDS.
Nothing much else to say - some perennial problems haunted us and cost us the growing chance we had at the division. However, for some perspective, take the odds of sweeping the Cardinals + Reds, Cards dropping a game to the Braves or us winning a one game playoff for the division. Probably 10% if we're being very optimistic. Someone pointed this out on twitter before the game yesterday, but I forget who. Granted, everyone is rightfully scared of Arrieta going full Bumgarner on the playoffs, but would you really place our odds of beating a first time playoff pitcher at less than 10%?
There are a whole lot of areas where we can place blame besides poor hitting and a bonehead defensive play in one game. Slow start, inability to put away bad divisional opponents, even to the extent of getting swept a few times, bad managerial decisions, etc. etc. It's a long ass season - some of those things are necessary to address, since it will be even harder to win a division next year. But we've been the best team in baseball since May, and I'm sure as hell not going to give up on the season because we lost two tough games.