Do I really need to iCloud backup my phone when all my relevant data is already on the cloud in some form or fashion without the backup?
Do I need to waste iCloud space with an iPhone backup when I'm already using iCloud for Photos and Notes? And every other one of my apps is separately saved in the cloud. I use LastPass for passwords and it's separately on their cloud. I use different non-apple mail exchanges for Calendar and email. I have my contacts on my Google account. All the other random apps have their own data saved on the cloud (Facebook, Intuit, Waze, etc.).
So what am I gaining from a backup of my iPhone? I just got a new iPhone and I think I pretty much set it up manually because I wanted a clean slate after 3 years on my old phone.