To say your vote does not count is a rather feeble argument IMO. Both Barack and Hillary have received about 50% of the total votes cast and the delegate count actually reflects this fact. However, I agree that the primary is a more broad-based system than caucuses. The upside to caucuses is they are a community affair and often tend to reflect the sentiments in their state - if opinion polls are to be believed. Also, if you have ever attended one, caucuses are not some dark back room  maneuvering but rather a lively, active, open  and very participatory decision making process where anyone who is willing to take out an hour or two from their day can attend. But yes, they are no substitutes for full fledged primaries.

Obama and Clinton  are both good candidates, neither is flawless, and both will make a better president than Bush (or maybe even McCain for that matter).

Just my thoughts.