It seems to me that one possible "Light Side" temptation would be to rationalize any "lesser of two evils" type situations. Like killing one man to save 10, or slaughtering millions to save billions, or even just the "can't be in two places at once" heroic dilemma; that requires detachment. You can't make those kinds of decisions without regret one way or the other if you think of the people as real people and not just a statistic.

This makes a lot of sense when you consider that ones' passions tend to fail them when faced with this type of "no win" scenario. Most realistic characters are not super heroes, they can't actually stop both missiles or save both Mary Jane AND the trolley full of boy scouts. Luke can either choose to follow his passion and go save Han and Leia from Darth Vader on Bespin, or he can stay with Yoda to complete his training for the greater good of the galaxy, but not both. Anakin can either choose to help the woman he loves when she falls out of an air speeder, or he can go with Obi-wan to stop Count Dooku and put an end to the civil war, but not both (and the fact that they end up failing is irrelevant to the choice itself).

In the climactic struggle between Palpatine and Mace Windu, it is Anakin's inability to accept either outcome that leads him down the path to the Dark Side regardless of which one he chooses to help. He is simply too close to the issue and the consequences of either decision to think rationally, and it's easy to see how emotionally broken he is in the immediate aftermath.