atladsenser, I enjoyed your story. You did what was best for the quality of your life, and I wish you the best.
Even with a successful site, we can find ourselves performing more tasks we don't enjoy and subjecting ourselves to increased risk, all of which makes a good 9-5 job much more appealing. There are many days when I wish I could call the IT department to fix my computer problem or grab a co-worker for advice (and have a company pay my health insurance - it's brutal here in the US).
What keeps me going are many of the things jonathanleger mentioned, plus a healthy shot of pride in my sites. No shame in retreating to the day job. People change.