But there IS flexibility. Granted, it may depend on the court and the state, but you can ask to have your jury duty delayed; you can ask to have the venue changed under certain conditions...
Last time I got called was for District (I guess what some of you all are calling county) court. There are four courthouses, and one is in a city I'm really reluctant to enter... okay, I admit, for crime reasons

. Well, when I called the number on the card and spoke with a very nice woman, she explained what I should put on the card to request a change of courts. I did, and to show I wasn't trying to make things easier on myself, requested the court furthest away - about a 35 minute drive, or an hour and a half using public transportation plus taxis. I was stunned with my replacement assignment - the courthouse I can see from the front door of my apartment building!
I know people in this thread have claimed that SAHMs are being picked on, that if they could do jury duty they would but they can't because (any one of a number of excuses). But I have to be blunt -
it seems that with many people, when they don't have being a SAHM/childcare/homeschooling*/self-employed spouse**/etc, current excuses, they'll come up with other excuses not to perform jury duty.
*Isn't one of the benefits of home schooling that it doesn't necessarily occur during "standard" school hours, that it can be SO flexible?
**Relatively certain that being self-employed isn't a valid reason for the juror to be excused, so it would seem entirely reasonable that a judge wouldn't accept a juror's spouse being self-employed as the reason that juror couldn't serve.