Obviously the draft isn't an exact science and teams sometimes do get lucky with steals in late rounds.  However, it is a myth that it is super easy to find a top running back in later rounds.  Go pull up a listing of the top 8 running backs last year in terms of total yards.  Guess where those eight players were drafted.  Four in the first round and four in the second round.  To be fair, the 9th and 10th ranked rushers were Day 3 picks, but you could probably find that at many positions.  Even quarterback, the most premium of premium positions, had 2 players originally selected on Day 3 (Cousins in the 4th and Brady in the 6th round) in the top 10 in passing yards last year.  It doesn't mean you should way until Day 3 to draft your starting quarterback.

If it's a need and you really like the player, I'm fine with a running back in the late 1st round.

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