Welcome, Truet. You were in GCx Churches very close to the years I was (~1980-1990 in MD). It seems quite a few people in the Ames Church have written here. Most people who write here are understandably anonymous. As Huldah said, McCotter has wrecked the faith of others also. You are not alone. It sounds like you may have experienced painful rejection which sadly is not uncommon in GCx churches.
I love what God says to us regarding choosing us and not rejecting us:
But you, O Israel, my servant, Jacob, whom I HAVE CHOSEN,
you descendants of Abraham MY FRIEND,
I took you from the ends of the earth,
from its farthest corners I CALLED you.
I said, ‘You ARE my servant’;
I HAVE CHOSEN YOU and HAVE NOT REJECTED YOU.
So, do not fear, for I AM WITH YOU;
do not be dismayed, for I AM YOUR God.
I WILL strengthen you and help you;
I WILL uphold you with my righteous right hand.
Isaiah 41:8-10
(Emphasis mine)