wonder why? I don't, I know why...

Caucuses must be abolished.

Might be the best thing that comes out of Sanders campaign, showing the unfair and anti democratic nature of a caucus.

Democrats in caucus states need to get together and change those into primaries ASAP

to allot delegates by caucus instead of using the Primary. So if holding a caucus was rigging the system, that was aggressively done by litigation by the Democratic Party. This is also the case in Nevada, that caucus was established just before the 08 cycle, replacing a Primary with Harry Reid and the Democrats pushing for the caucus.
Nevada Caucus drew complaints from Sanders supporters. Washington from Hillary supporters. Clearly both candidate's camps have criticisms of the Party, the process and the often convoluted methods being employed.

It's just funny to me because on DU Hillary supporters present as Ultra Loyal to the Party but after Washington they have disparaged the Party's choices just as strongly as Sanders supporters have after other States. 'It's rigged!!!!' Who rigged it? The Party. If not for the Democratic Party's insisting upon a caucus, Washington would have a primary today.

The complaints stated in the OP should be taken to the Democratic Party, particularly to the State Parties that established those caucuses.

Minnesota has already switched to primary elections, beginning in the 2020 presidential election year. Other states are considering doing the same, and the caucus question will be raised at the convention, too. I predict that few, if any, caucuses will held in 2020.

Primary elections make voting for presidential candidate much fairer. Closed primaries allow Democrats to choose the candidate for their party, too, without interference from people who are not Democrats.

I predict major changes before the next presidential primary season. Democratic Party leadership has learned an important lesson in 2016, I think.

That was proven beyond a shadow of a doubt in this primary season for sure.

Hillary won Nevada the same way she did in 08, with lots of noise and finger pointing on both sides and an over all feeling that the process was nasty.

Nevada has a Caucus for the same reason Washington does. The Democratic Party in those States demanded to caucus. Replaced the primary.

losing campaign. It's proof that the Hillary's support is stronger and deeper for a General Election, and proof that Sanders' plan to coerce super delegates to vote for him is just not supported by the will of the people.

Thanks for posting this!