Now it all gets a bit clearer
I used to have a YouTube account, not a very active one ,just a couple of dozen videos of cars and the like.
Then one day YouTube told me I HAD to have a google account as well to use YouTube.
I have no need whatsoever to have a google account so after several seconds deliberation, rather than create yet another flaming account to lose the password for I simply deleted the lot.
Now the reasoning behind this second account becomes clear, Google are buying up online content providers and getting the content owners to organise all the content for them by pinning it to a google account allowing them to build a GooFaceGleBook 1.0 out of all the bits.
Wow, deleting my content and ditching YouTube was a lucky escape.
It may come as a surprise to you Google, but some of us havent signed up for social media sites, trying to lure us in wont increase your userbase.