You signed up, and PAID FOR MobileMe at $100 per year.
MobileMe has not existed for TWO YEARS, it was replaced by iCloud.
iCloud is free. You are $100 a year better off using iCloud than you were using MobileMe. On top of the $100 saving, Apple also gave you a FREE 20Gb storage upgrade for over a year. That complementary storage upgrade is coming to an end.
You can either revert back to the FREE 5GB storage, or pay to continue getting 20GB. Even if you pay for the 20GB it is still costing you LESS than MobileMe was.
You want everything for free? Another typical member of the 'entitled generation'.
All cloud services give a limited amount of storage for free and allow you to pay to upgrade it if you want more.
Apple always made it clear that 5GB is free, and the extra 20GB was complimentary for former MobileMe customers as an additional bonus for moving to iCloud. Apple weren't obliged to give you anything. Stop whinging.