Perhaps I'm missing something, but I don't understand why (when the we can't see the spotlight pointing at us) we don't see something akin to this?
See attached
Again, how close does the Sun appear to get to the Earth upon sunset?
That is the height you are expecting to see light in. You are expecting to see light with a zero dimension. There's nothing to see.
1. How can a sun that's above the plane of the earth appear close to the earth upon sunset?
2. Why is it that we pass out of its spotlight pattern the moment it appears to be eclipsed by the earth?
3. Why can I see the sun again if I rise in altitude (even while moving further away from the sun)?
4. Is there an altitude at which I could be where I will not be in the spotlight pattern but could still see it cast upon the earth in the distance?
5. Why does the sun appear circular until appearing close to the earth (and even, when atmospheric conditions permit, as it appears eclipsed by the earth)?
6. How is the moon illuminated by the sun if the sun casts its light in a spotlight pattern? (I know you promote moon generating it's own light, but I ask to be sure this is integrated with your answers)