I personally do not handle caffeine well so if/when I have child(ren) I won't have any trouble giving it up. I drink next to none now! I drink decaf black teas, which have very small amounts of caffeine in them.

http://www.stashtea.com/caffeine.htm

If I do have caffeine and it hits me in a good way the house will be very clean or I'll get a lot of crochet done!;-)