I use a free BitBucket plan. The unlimited private repos are perfect for me, since I have a lot of small projects that I'll likely never finish. Also, i have Pass[1] set up with Git, so everything is backed up, under version control and is pushed to my Raspberry Pi so I can access all my passwords on my iPhone as well.
Also, I use Git for large academic projects and papers in LaTeX, so public Github is not really ideal.