Back pain can suck. I used to have issues with my back a few years ago but luckily it was because of my chair. It was my fault, really. I spent all of my budget on a Gaming PC but I cheaped out on the chair and desk. Wasn't the brightest idea and I payed for it. Luckily after a few months I had enough and got a real computer chair. Wasn't cheap but since then I haven't had any issues with my back.