If you are writing a blog to a limited audience, say, your family, they will probably go and read your blog on a regular basis whether they have clicked "follow" or not. An advantage of following a blog is that it can post the latest one in your email, but a lot of people don't like getting one more automatic email.
What you really want is viewers. And you get that by writing interesting content, with attention-getting titles, that index in Google. And if you are writing your blog on Google Blogger right now, it's happening. If you are writing a blog on "Annual Flowers in Arizona", it will be something that people can search for, and find on Google. And if they are interested, they will view your page. If you want to see your viewers, where they are from, what posts are the most popular, how they are finding you, and important information like that, forget "followers", and go check your Blogger stats.