Really ? Mowing the lawn may start as ASAP and does not have a due date. It’s just that if you don’t do it the next action changes to “use round up in the garden” can’t see a due date nor the someday maybe category.
Doing something for a client often is an ASAP without a due date. The client may call at some point probably then you get a due date.
I could go on forever…
I love deadlines. I like the whooshing sound they make as they fly by (quote courtesy of Douglas Adams)