Why we have to do jury service?

Wanna get out of it? Work for the government.

lol yea or there is still hope though you might not even get chosen

true

Being part of a jury is more important than you think. I believe you’re entered into being considered for jury duty when you register to vote: it’s like an extra little facet where you have your opinion heard. It may not benefit you, but it will benefit your community, which in turn benefits you, doesn’t it? As long as you take it seriously, and consider the situations, whatever they are, thoughtfully, you’ll be benefiting yourself indirectly. You are dependent on those around you. We all are. You’ll either be punishing someone who deserves it, or setting that person free, meaning you’ll either be putting danger away, or allowing a valuable member of society, being charged for something unnecessary, to go unpunished.

Things vary. In Texas it was feared that getting potential jurors from registered voters would encourage people not to register and vote so now they get them from auto license and ID registration as well.

In the US defendants have the right to a jury trial.

You do not have to know anything about being a juror. You will be given instructions but once jurors are in deliberation they are free to do as they wish. Jurors can not be punished for the verdict they reach unless they were bribed, lied about their qualifications to be a juror, and stuff like that.