If we agree(and we're pbb not) that the sun is a ball, emmiting light in all directions, it wouldn't matter if it gets smaller it would still light the surface.
If you have never seen a 'big' sun go down, I don't know what to say....I'm sure you can find a lot of videos.
>>One must be asleep to believe we are on a sphere spinning at 1000 mph, rotating the sun at 67 000 mph with absolutely zero feeling to this movement.<<
When you drive a car you'll notice that you mostly feel acceleration and also the difference in speed if you go from one to the other quickly.
If you go from 0 to 100mkh you'll feel as if you're driving fast. But if you then go to 200 and then back to 100 again it will feel extremely slow.
At a constant speed for the last, however old you are, -years you will not feel the movement.
On a sailboat you will get used to waves so much that you feel it more once you are back on land again.
To quote yourself "it's Perspective"
Here's another little mindf I just thought of, regarding the "I can see no curve" argument:
If you imgaine standing on a small island in the middle of the ocean, where you have a 360° open view.
According to spin-ball theory ;) you would see the curve.
According to flatearth-theory you would see a curve too, because you only can see a certain max distance in each direction.
You are not going to see a Square shape or anything else, you will at least precive it to be a curve.