It's okay. :) My sibling had the same problem with the character inconsistancies, although I didn't really have a problem with the finale (tho' it broke my heart - my sib looked at me like I was crazy as I wept like a baby), because being a big fan of the Arthur legend I kind of knew how it was going to end, which made it less shocking, but still traumatic.

So I liked it, but you're right, they ended up being forced to end the series, instead of being able to draw it out, and that's what Carver's been able to do. If the boys had closed the gates, it would have put a damper on things. But now with Cas, and the fallen angels, and sick Sam, as well as the boys being emotionally on the same page, I think the storyline can just carry itself. :)