Well, is it a job if you work for yourself from home? Maybe it is but it probably won’t feel like it.
Hey, I don’t have the guaranteed paycheck, medical, pension and all the other stuff which goes with a job but looking at many friends who have a job, they don’t know if their job will be there next month so how am I worse off?
If you build something on the side and let it overtake your earned income then your cashflow should be fairly predictable. If you apply what you know to a few different websites and ideas it is unlikely all of them will fail at the same time. And, if you end up working as many hours as you wish, when you wish, wherever you wish you might even find it beats a JOB.
Give it a try. You might really enjoy it.