I still have yet to hear anyone state how this trade makes sense for the Celtics.
It's all about aquiring young assets for a guy who won't be worth anything to the Celtics in a year or two, when he retires. If you believe the Celtics have a decent chance at winning the title this year, or next, as currently constructed, then you are against this deal. Otherwise, it's a no brainer.
For me, it's about winning championships, as soon as I believe there is no chance to win as currently constructed, it's time to begin rebuilding, and gear up for that next title. This trade would net the Celtics two young talents, that clearly, in two years, will make the Celtics better than if they just keep KG and let him retire a Celtic.
It's also not necessarily a slap in the face for KG. Who wouldn't want to improve their chance of winning a title before he retires. In L.A, he would certainly do that.