Angie, I agree that there is no such thing as a fair jury. I'm not just saying that because they always said I was guilty but people are not robots. They have emotions that will always conflict with the facts. This can work for the defense sometimes though. Often times, a lawyer might try to show a jury the defendant's more sympathetic side to try and nullify the jury. You need to look at the possibility that the defendant is innocent which is what most people refuse to see. They would rather see an innocent man thrown in jail because of that opportunity rather than believing the real killer(s) is/are out there. It gives them a piece of mind which is a very false piece of mind.
I've never been a jurer but I've been a defendant four times and it is amazing how many times you are judged by things that have no relevance to the case like your appearance, your family (if they're there) or even something as small as a symbol like a cross. The last judge I was facing was a Catholic man with 4 kids. I was actually advised to wear and show my cross. There are certain things that people look for that really make no sense to me. But it worked in my favour at the time and I got off without even having a record.
If I was a jurer I wouldn't be a very good one. I would probably always vote not guilty. If there is any advice that I could give you it would be to not look at the defendant at all if you can avoid looking at him or her. As stupid as that sounds it will give you a false impression most of the time.