^ Plus our captains usually have a defensive field set up a lot of the time, which doesn't help the bowlers at all. In Test you can't worry too much about the fact that they are scoring runs too quickly. Off course it's something to think about, but setting up ODI like field makes it easy for batsman's to just pick up singles and doubles and pick up occasional boundary. If we had a much more attacking field set up, WI batsman would have tried to take advantage of the field set up and try to play over the fielder's head, which gives us a better chance to pick up wickets. Also when you dry out singles sometimes it puts pressure on the batsman to do something different and end up gifting his wicket away.
"I was the happiest man in the world, happier than Bill Gates"- Tamim Iqbal