VitaMan you are absolutely correct. I am in the same position. I am single, and self-employed. Serving jury duty for an extended time (like more than a few days) would destroy my business.
I was called once and obtained a deferment, legally, by enrolling in a community college class. This was done so that I wouldn't have to miss work, not for some lack of sense of civic duty. It was the only out available to me.
There are some who opt out for legitimate reasons. Let's not paint with too broad of a brush.
I realize you lawyers need to get paid. So do the rest of us.