One issue is how they nickel and dime you for storage space. I think you only get 5GB free and then have to "upgrade your icloud plan" even after dropping $800+ on a new phone, which you might want to back up.
Ah. I thought terrible meant "issues using the service." I do have some annoyances with how I'm charged for things, but I don't mind paying for services ($2/month for 200GB) that give me things without resorting to selling my browsing habits to the highest bidder.
It's not free. You must own an iDevice or a Mac to use iCloud and worse if you pay for one device you get 5gig. If you pay for 2 you don't get another 5gig
