The main reason I'm an atheist

[Brian37]

Could someone tell me roughly what percentage of star light we see in the sky at night emanated originally from stars that no longer exist?

Well, that's a great question.  Anybody?  How would we find that out?
But considering that the light from Proxima Centauri (closest star to us) takes 4.24 years to get here, and Sirius (brightest "close" star) is 8.611 light years away . . . gee, most of what we see could be gone and we'd never know!  The stars of Orion's Belt (Alnitak (736) Alnilam (1340) Mintaka (915)) could have burned out centuries ago.  That's kind of a sad thought - I like that constellation.  

Actually it is a stupid question.

That is like asking why the exhaust from a jet is still there even though you don't see the jet anymore.

You can think of a ray of light like a bullet being fired out of a gun, the light keeps going forever until or unless other bodies and gravity works on it. So that gun the sun can fire that bullet and die while the bullet keeps going forward. Just as stupid as asking why you still exist after your parents die.

DAMN IT....EDIT..... Sorry, misread.........

You were asking about percentage. Again, it is one of those questions I get from theists, and to be honest when I was growing up I didn't understand the concept of cosmic distances and when I looked up into the sky I thought, it looks so close how can it be so far away.

Sorry. I like to leave my mistakes up so I don't get accused of hiding things. I do have a form of attention problem. Always have.