I'm in the hoosier state about 2 hours from the OP. My indoor is metal, it was put up by Farm Builders. It's almost 20 years old now, never had any problems. We've got fully insulated walls that are covered with with osb 12 ft high and the top has the clear corrugated inserts for light, and 16 ft sliding doors on all 4 sides - with the doors open in warm weather it's very airy. It also stays plenty warm in the winter - I ride in under armour leggings & top under jeans and a sweatshirt even in the worst part of winter.
Life is like a camera. Focus on what's important, Capture the good times, Develop from the negatives and if things don't work out, Take another shot.