As I've said many times before, I disagree whole-heartedly with the above.
You will not get the same benefit from pushing a prowler as you will from running for 3 miles. And one is NOT better than the other. It just depends what you're training for.
It has nothing to do with enjoying "that stuff" - there's certain things you'll train for that you'll need more of an aerobic base, and that's where the longer distance runs come in.