Yeah, I'll be seeing it this week. Not sure which day though.
As I mentioned, I could see how it'd be a shock to see a childhood hero go in a different direction the next time you see him or her on the big screen again. However, it's important to remember that some time has passed between RotJ and this new ST, so Luke may have had some experiences in between then and now that caused him to become the way he is now. Perhaps in the slumbering Kylo scene, Luke was again flirting with the Dark Side himself. Doesn't mean you have to agree with that direction, just that it merely is explanatory and plausible. As I've stated, I'm sure I'll probably enjoy the film simply because I like SW as a whole (I'm sure it can't be as soporific as TPM or AotC), and even though I may possibly disagree with the direction of some characters, I still accept that what happens in this ST is what happened in SW lore post the OT.
I always wondered if in RotS when Windu was about to murder Sidious, if he was even flirting with the DS himself as well in that scene.