Ron

3. Discovering that Lawful Good is the best alignment.
This is a discovery not everyone makes. Not just in roleplaying games either. Countless people live and die without realizing this simplest of truths.
Lawful Good is not adhering to Law, nor is it adhering to Good. It is following Lawful Good, a perfect construct that combines the compassion, righteousness, and devotion of Good with the mercy, justice, and discipline of Law.
If an evil judge uses the Law for evil purposes, a Lawful Good person is not obligated to respect that judge's decisions. In fact, he's obligated to remove the judge from his position. He only follows the law when the law is good and just. He only need follow Lawful Good. It's like being in bed with either the perfect woman, or two incredibly hot women who are bisexual and love each other just as much as they love you.
If a group of bandits who slew countless villagers demand mercy when the tides of battle turn, a Lawful Good person need not spare their lives. He is not merely Good, he is Lawful Good, and the deceased deserve their justice.
Or, he can spare those bandits, depending on his personal beliefs of Lawful Good. He has choices to make in order to define what and who he is, and each of those choices reveal more of who he is than a simple question of "Are you good or are you evil?"
The choices a Lawful Good person makes are the choices you want to make, or at least should want to make. Even if your DM punishes you for every lawful good act you perform, it's better to fight for righteous causes than to succumb to the easier, wanton paths.