Re:SpaceX's Grasshopper Successfully Flew 325 Metres
by rbanffy on Saturday July 06, 2013 @08:21PM
(#6000543)
I believe they considered parachutes and came to the conclusion that, since they are keeping the rocket engines, extra fuel and oxidizer are a better use for the mass. Parachutes large enough for slowing down the first stage along with the pyros needed to deploy them are heavy.
Could be that the weight savings in fuel aren't enough for that choice, or that there are other good reasons not to (added complexity, potential non-reusable components)
[1] Although, aeronautics is famously non-intuitive, so ymmv.