Same here. I pay $60/year and it absolutely solves passwords for my family across any device.
I am also wary of putting all my eggs in one basket. If I got locked out of my iCloud account somehow, I could still get at all the logins, authentication codes and important documents I have in 1Password. If I kept them in iCloud, I could well and truly be screwed completely.
edit: one other important consideration is vulnerability of iCloud Keychain on iOS. Anyone who gets your iPhone's unlock code (say, if FaceID fails and you type it in manually) now has full access to your passwords if they can steal your phone. Apple has not seen fit to fix this security hole where that unlock PIN gives you access everything in the phone, including iCloud Keychain. 1Password on iOS, on the other hand, can only be accessed by biometrics or with a full password that is not the same one you unlock your phone with.