Being present (I mean 100% present) in one's life certainly is a good way to be passionate about it. So many people are passengers though right?
What I like about reading people's opinions is how they differ but have the same things at the core. Also, I like it when a person can pump out a heap of words with meaning and substance rather than fail to even define and clarify what passion means to them, or any other topic I may have suggested.
It seems like you can clearly define it and I bet you didn't even need to think about it too hard right?