Regardless of what the truth is, how would you prove it?

Personally, I see them as just creations of my mind. Sometimes I am able to feel stronger emotions towards them, such as awe, especially when they do something impressive, but I see that as being no different to an artist feeling something from his own work.

Actually, another question I have (not directed to you in particular, more to everyone who has considered this possibility, but feel free to answer) is: do you want them to be something more? If the truth of the matter could be found, which of the possible answers would you feel the best about and why?