Reasons Not to Use Google (2015)
This is an interesting list of reasons.  Even if it is long, I'd say it's still somewhat incomplete...<p>I was motivated by this list to stop depending so much on google.  But it's harder than it seems.  For example, if you purchase a fastmail account, you still need a google account to install the app in your non-google phone, because fastmail only provides the apk files via the google play store.  There's so many such "roadblocks" in de-googlification that you inevitably give up at some point.