I'm almost completely disconnected now. DDG is fine (usually ok, sometimes worse and very occasionally better), and there's always !i or !g if you start misssing google. FastMail costs money but is in my opinion better than GMail. I have SIP instead of google voice, although it doesn't provide free transcription which I would like. I have cyanogenmod on my android phone without the google apps, although I do miss some of them (plus a lot of the app library that depends on google play services). I actually really like firefox these days and use nightly on both android and my desktop, they sync nicely. I have a plugin (google disconnect) that stops other sites from telling google servers about my visit (blocks a massive number). This also causes youtube embeds not to work, but you can always click the icon and say unblock for now.
I use owncloud on a 60$ per year vps server for syncing calendar and contacts, dropbox functionality, rss reader etc. It's slow and not as good as google drive, but it's good enough and I have more space and full control.
So for me it costs about 110$ per year to disconnect from google, and not all of the replacements are as good, but some are better, and I definitely feel better about it.