Terms like 'good' and 'bad' are extremely simplistic in what is a far more complex situation.
Ultimately you want to do something in life that people will remember. And with Buffy, I did that. I don't feel like I need to achieve something. I just do it because it's fun. And that takes the pressure off.
I think dreams can come true, but not necessarily like fairy-tales. It's not always so perfect like that.