I wonder, has the EU every looked into "positive emotions" and the Force? The Dark Side obviosuly feeds on Anger and Hate, and the Jedi (and thus, one assumes, the Light Side) focus on a lack of emotion and attachment. is there a canon Star Wars Force tradition that embraces love, compassion, friendship, etc...?
It's worth remembering that the whole "no emotional attachments" thing was an invention of the prequel trilogy. It literally didn't exist in the original trilogy. Obi-wan actually promoted the use of emotions with the whole "trust your feelings" bit. And even Yoda used fear as a lesson. The Jedi teachings from the original trilogy were to control your emotions and use calmness to know positive feelings from negative ones, but never to actually deny emotion or attachment.
As you can imagine, the EU reflected all that, right up until the prequels came out.