[Por_sha911]

First of all, cheaper is not better. It's just cheap.
Seond, you've totally ignored the issue of protecting the pilot, redundancy of critical systems, and accuracy.

Repair cost is more than time. High tech parts are far more expensive. Cost aside, wouldn't you want to put your butt in the plane that will get you back home? Would you want the pilot to be able to spend more time (because he is safe) and have better accuracy doing support to your son on the ground? Let's exaggerate to make a point. We can drop a nuclear bomb with pinpoint accuracy but the weapon in not going to discriminate between the enemy and your son 20 meters away.
Show me real stats on an aircraft that can do what the A10 can do to the enemy AND protect our servicemen on the ground and in the air at the same time.