Ignoring a jury summons is a bad idea. If the Court is in a ticked off mood, you can very easily spend some time in jail. You can always get out of it, but you shouldn't. My wife successfully begged off once, by observing that she was pregnant and due to deliver, suggesting that labor during deliberations might not be good.
The truth is, we NEED good people on juries. First thing you do, go to www.fija.org and learn about it. The material put out by the Fully Informed Jury Association should be required on high school Government class.
If you search for juror,jury and juries, you'll find lots more. But the bottom line (and I wish I could quickly lay hands on L. Neil Smith's essay on the 1,000 year-old right and duty of a jury) is simply that you have a duty to judge the Accused AND the Law.
Any time a judge tells you that "if the facts prove he did it, you must convict," the judge is lying and every attorney in the room knows it. (This issue has gone all the way, and the Supreme Court took many words to say, essentially, that yes he's lying but he's a judge and he can do that.)
I most strongly, STRONGLY urge you to study, starting at FIJA.org, learn what a juror should be, then SERVE on a jury if at all possible. The jury is the final word on any law in this country, not the Supreme Court. But it only works if we have informed jurors.
Good Luck.
"In America we have three ways of changing things: the ballot box, the jury box; and if those don't work, the cartridge box."
--Former Idaho Rep. Steve Symms