If you're financially set up, and you hate working, then why not think of it as taking a break, rather than stopping work entirely.
You don't KNOW how you will feel in a year's time, or two years time, etc.
If your DC are in their teens, I guess you will have a few more years before they start leaving home - I can fully understand you wanting to focus on them if you don't HAVE to work.
For a start, their lives will be our routine I guess. Getting up with them, taking them to school, to sports activities etc. It will certainly make the school holidays easier and more fun - as teenagers there aren't the same clubs and activities available as they don't need childcare, as such.
Perhaps you would consider doing some studies - if you could afford it financially? You would then have the same holidays as them, roughly speaking. You can use your day time to study. Then when they do leave home (or grow up but still live at home!), you could work in a different field that you might enjoy more.