Iacchus said:
I don't think most people believe that. Do you?
If you are simply looking for the truth, does it matter?
Tell it to the Wright brothers! Because if you keep approaching it from the standpoint of being "earth-bound," it'll never fly. 
The Wright brother had very strong evidence that powered flight was possible. Birds flying would be a good example, altough, at such a time, I'm sure immaterialists such as yourself might have claimed that its the spirit of the bird that allowed it to fly, and that man was not born with wings, and could never fly.
Anyway, the Wright brothers did not just build their plane and hope it would fly, they approached the problem from a *very* scientific standpoint, testing many ideas with experimentation.
The anology you attempt between flight and spirituality is meaningless unless you can present the same type of evidence the wright brothers had (as well as start explaining how we could do some sceintific experimentation like the wright brothers did)
And yet because it's so close to the spirit, conscious desire is the manifestation of "spiritual desire."
How can you make such blatantly circular arguments and still take yourself seriously? Oh yea, I forgot, you don't, you just believe what you want to believe.
Spirit is the essence of everything, but primarily manifests itself through consciousness.
You haven't explained spirit, nor provided any predictions about expected behavior.
Does the radio signal cease to exist when the radio is broken?
Again, a bad analogy, no evidence points to the brain acting like a radio. Please point to some.
If we grow old and feeble, we essentially enter as old and feeble. But that isn't to say we're not allowed (eventually) to return to what we cherished most in life, and return to the "spring of our youth" so to speak.
Really? You've never been to the afterlife, what evidence do you hav...er, nevermind, this is just what you want to believe, my bad.
That's hard to say. However, the spiritual world/reality is a very diverse place.
I don't think you understood the point of her question...
It's essentially your personality which passes on.
Personality is greatly effected by chemicals in the brain. If you have a chemical embalance, and take medication to correct this imbalance, which personality are you in the afterlife? What about those with multiple personality disorder? What about people who suffer severe brain trama and change personalities, or even in more severe cases, forget everything about their life up to that point, including their personality, and start over from scratch? These beliefs you desire to be true do not match up well to reality.
Yes, all these things exist in the spiritual reality as well. Otherwise it would have been impossible to savor the taste of the beer I had in my dream the other night.
Dreams have nothing to do with the spirit world. Have you ever actually studied modern findings on dreams and dreaming? You may wish to read this paper to bring yourself up to speed:
http://www.brain-mind.com/Dreaming.html