To chart or not to chart...

I have been reading a lot of baby message boards lately (mostly on The Nest). A lot of the women on the boards really advocate charting your fertility from day 1 so that you know exactly when you are ovulating. People on some of the other non-baby related boards think that is crazy and you should just "have fun with it" and let nature take it's course. I can see both sides of the argument. On one hand, I've never been known for my normal cycles, so I think charting could be a good way to see what's going on. On the other hand, I don't want to be stressed about this, and I would like to just see what happens. One thing about me though is once I decide I want something, I WANT IT BAD!!!