I don't really know why, but I remember times when I had laryngitis, and was told that whispering is harder on the voice than talking. I suspect that when you're having voice issues, talking might be harder as well.
If you're having such chronic problems with your voice, 33333 has a great point. Why not make an appointment with a speech therapist? I'm sure you've seen an ENT, so that's not going to make a difference. But a ST might be able to help you deal with what's going on.
Not sure if it is covered via insurance, but it very well might be. If it were me, I'd definitely give it a try!
Nissen Fundoplication 2/09
"Whatever you fight, you strengthen, and what you resist, persists.”
“Worry pretends to be necessary but serves no useful purpose”
“Accept - then act. Whatever the present moment contains, accept it as if you had chosen it. Always work with it, not against it.”