Just closed my ebay & PayPal account today as fed up with the increased fees, etc, and the fact as a seller I've only got the option of positive or leave feed back later choice ?.
Like people have said you don't have to use it, or use it begrudgingly.
Problem is there are a lot of complainers of ebay, and telling them about it. Where as I think what a lot of people should be doing is is like you would with a physical shop, if the service isn't good you go else where and till they learn that they need to change their act. Same really needs to be done by demonstrating to ebay by people closing their accounts. Once ebay start getting the gist that their customer base is starting to disappear as account holders are not happy they may change.
And as to the comments that ebay are doing something about it, and good on them protecting the buyers, yes this is good, but if they only protect the buyers, and only buyers are on there due to the way things are going, what are they going to do when the sellers disappear ?.
Do I regreat closing my ebay account, nope.