For users who aren’t familiar with Google+, they think it’s the actual Google website. It is not. It’s a service, just like how Blogger and YouTube are. Blogger is Google’s blogging service, YouTube is Google’s media service, and Google+ is Google’s social network service.
People do not have to sign up for Google+. If they have a Google+ account and don’t want it, they can delete it. Once deleted, it will not affect the entire Google account. For a time, when new Gmail accounts were being created, Google+ accounts were created by default. I know this because it happened to me. (I often created alternate Gmail accounts). Since I was already familiar with Google+, I deleted my profile, stating the reason, “I already have a Google+ account.” I think when this default occurred, people probably thought they were stuck with it.
For a while, Google has been integrating Google+ with its other services, most notably YouTube, Gmail, and Blogger. Regarding the YouTube integration, it started with Gmail. Meaning, people were able to sign into their YouTube accounts with their Gmail information. Prior to that, people signed in with their YouTube username and the password they created during registration. I found the Gmail integration to be convenient. When I first started using YouTube, I had a Hotmail account. (Gmail wasn’t around yet at that time).
Now, they’ve integrated Google+ with YouTube’s new comment system. I think it’s better. It’s more clean and it shows comments that are more relevant to the poster and the video. It also shows a better threaded discussion. A lot of people don’t like the new comment system though. I guess they prefer to read hate, sexual, or spam comments.
Anyway, a lot of times when I read comments from people regarding Google+, especially from those who are not familiar with it, they’re generally negative. Also, they always compare it to Facebook. I don’t think they even take the time to explore Google+. They’re too busy having the mindset of Facebook. Google+ has a simpler navigation system and it doesn’t bombard users with ads that aren’t relevant to them. In fact, it doesn’t have ads displayed at all. There isn’t anything obtrusive either. Users get a smooth experience. People need to remember that Google+ is not Facebook. Stop treating it like Facebook. Explore Google+ before you say it’s too hard.
Edit: Google+ is required for the new comment system on YouTube. If people want to post comments, they’ll have to sign up for Google+ or connect their Google+ to YouTube.