Personally, I like series because the story continues. I like to read about the characters I've come to love in future books. I think that's the reason I'm prone to writing series versus stand-alones. I enjoy the world-building aspect of it.
One of my favorite apps is Goodreads because I can track all the books I read. My Kindle is linked directly so when I start or finish a book, it updates it. As you can see, I'm working on my reading challenge for this year. Because I spend so much time writing, I am a much slower reader. An hour a night mostly, sometimes a little more.
What about you? Do you remember the first books you read? What age did you start? How much do you read these days? I'd love to know.