We work, live and have fun on our computers; but life doesn't stop around us. We have things we need to do at specific times, or maybe just "later".
You can choose to use a complex task list system if you want, or you can use the better way: A simple and lightweight system that sends notifications right onto your desktop when it needs to.
I'm not a fan of giant task lists that just sit there, and I don't think you should have to put up with them either. This is why I wrote Scheduled Notifications.