Google Drive, OTOH, works on Windows/Mac OSX/Android/iOS (and probably WP7, Windows 8, Blackberry, etc, but I haven't done my homework). Dropbox is another option.
Personally, I would never use iCloud. It's not because of trust, it's because of portability. What if I have an iPhone, then decide to buy a Samsung phone? I can't use iCloud on that device (AFAIK), so I'd have to transfer everything manually. What if I change from Android to Windows 8? AFAIK, Google Drive will still work.
If you're so bent on trust, then use Dropbox. It's much more portable and they don't really care about your data, just your monthly investment.
Even for portability I'm not too concerned about iCloud. You can sync it all locally and the file formats are nothing too special. At worst I might have to go through a tedious process of using the native iCloud enabled apps to export the data brute force. It's all there if I really need it. I feel better about this arrangement than I do with some of the Google services that require pro-active data exports. I even backup my local iCloud cache so I could go back 6 months for a snapshot of old data. It's all just sitting here so I can do what I want with it.