Did Ra address the reason for our existence?

[Cannon]

As far as my understanding goes, according to the Ra material we were created by the One Infinite Creator as a means to allow the Creator to learn about itself. We're similar to a scientific experiment or, more specifically, our Mind/Body/Spirit complexes are the experiment, we ourselves in actuality are Creator itself (and everything else which exists, for that matter.) I don't know if going through this whole thing was our personal decision, but I would be very surprised if it was not. As for your saying we are "here to Love, to strive for Unity, to Forgive", unless you are specifically referring to Service-to-Other Wanderers, I disagree, as we, entities endowed with free will, are allowed to go 'down' the Service-to-Self route if we so choose at any time we wish, which totally abandons those things.