There's always a conflict in writing characters between writing what you think a character would actually do, and trying to fulfill some outside expectations for their behavior (whether those expectations are social or just your own). Penny changed her mind. If one wants to analyze the hell out of it, that might have been "a bad message to send" on the part of the writers. On the other hand, Penny isn't perfect, has been shown to be fickle on a few occasions and to have done other things she didn't seem to think she'd do on others. So the question is, whether you LIKE her changing her mind or not, is her doing so good, consistent writing for the character? Probably. As others have mentioned, Kaley Cuoco was happy with her character's ending, and she "knows" Penny better than probably anyone else except *maybe* the writer that created her. I'm sorry to anyone who was offended by this, but this was one of the frikkin' funniest things I've read in at least a few weeks. I'm not saying I *approve* - or that I *disapprove*, exactly. But damn.