There are benefits and disappointments in both sides.
Lightside alignment requires more conversational interaction and moral stances. This path also limits your credit potential, thus limiting possession of certain items earlier in the game, thus changing how you proceed.
Dark alignment requires ferocity and emphasizes needless slaughter to gain wealth and power. However, this path is quick to the end and many opportunities for XP are eliminated.
I've enjoyed both alignments, for different reasons.
The Starbuck's in Bowerstone has Percolated Java Macchiatos.