"I'll do it"

I've been thinking a lot lately about the phrase "I'll do it". I've been thinking about what I mean when I use those words and also what others mean when they use them. When I say I will do something, it's either to myself or someone else (Douh! obviously, right?!). Generally if I am talking to myself and say I will do something it's more as a mental note on my 'To Do' list. If I tell someone else I will do something, it's generally because I need to be accountable. Sometimes this accountability will happen after telling them once, sometimes it's after mentioning it three times. I'm pretty good about not 'crying wolf' about things I will do.
I've noticed my husband has a different way of handling the "I'll do it" thing. When he says he will do something it is often while he has actually started doing something. I like this one. Then there's the "I'll do it" that is meant to satisfy my nagging with little or no intention of actually doing the task. This one bugs me.
I guess what I find so interesting about these three little words is that, although so simple, the meanings can be so different. Words of action or words to satisfy. Words of promise or words of tale.
Now wouldn't life be a little simpler if people just did what they said?

For the record, this blog is not sarcastic toward my husband. I am not angry with him in anyway, nor has be not satisfied any chores on the list as of late. I was just simply thinking about the subject....You know, just saying what I really mean to say.