you have to have a google+ account to use google services. even if you never use it… even if you turn off all the functions etc… they don’t care… you still will have a google+ account. it’s their main source of tracking. everything done on google when you’re signed in goes through google+. it’s how they gather more information.
it’s a load of crap. i deleted most of my google related services and sooner or later i’ll delete my youtube videos and other gmail account. just for spite.
but here’s how you get rid of google+ 
