I agree with Babaqum and others henceforth to ignore those who do not understand the problem.
Let me summarise the situation first, then give a few comments:
(1) summary of situation ante-Mavericks:
1.1-- possible to sync locally a variety of data (not just calendar and contacts)
1.2-- possible to sync non-iOS devices
(2) summary of situation post-Mavericks:
2.1-- sync of calendar and contacts via iCloud
2.2-- possibility to sync calendar and contacts locally only if installing calDAV and cardDav server locally
2.3-- everything else impossible (until software appears from third parties or is written by user)
(3) there are legal spaces outside the USA where the post-Mavericks situation poses legal problems for some users.
(4) some mobile devices have lost some functions because of the change.
Some Apple clients, (some long-time) are not happy with the post-Mavericks situation. They are free to stop using Apple's products and migrate elsewhere.
So far the facts as I understand them.
The "fury" brollyjohn refers to is not so much about taking away the functionality but about the lack of notice and the lack of alternatives (I repeat again that installing a server locally does not solve the problem of syncing other data, point 1.1 and 2.3).
When your own house on your own land is appropriated for some project (a new motorway, say, or a new high-speed train track) then you have ample warning, right to appeal, and right to compensation. The process also gets media coverage.
The previous changeove of this kind was when Apple dropped the PPC emulator from Lion. I lost use of the software with which I was most productive. It took me over two years to recover, and in fact I still have not got back to the level I would like. But I was warned and there were alternatives.