Our coaches know that our kickers haven't been able to get kick it from 35+ yards out, so they opt to take their chances by going for it on 4th downs from the 30 yd line.
I remember Bronco saying that he felt comfortable with Matt Payne kicking field goals up to 63 yards out. Matt was our last excellent kicker.
I don't blame our kickers. I blame our coaches for not recruiting better.