There is a huge difference between what is speculated to be true, what seems to make sense, and what can be proven beyond a reasonable doubt.
I served as a juror on a murder trial (gang related). We, the members of the jury, came to believe the person was likely guilty; however, the defense raised reasonable doubt. Even though we thought the person was most likely guilty, we abided by the law and returned a not guilty verdict.
The prosecutor asked to speak to the jury after the trial and most of us agreed to meet with her. She asked what had raised reasonable doubt. Unfortunately (we learned then), she could have refuted what were issues for us but she did not do so during the trial. At the end, she thanked us for our service and told us we had done what we were supposed to do. She also pointed out that people who commit crimes don't usually stop and the person would likely end up in court again.
It was an eye opening process. I'd encourage you not to judge the jury. They did their job even if you don't like the result. I'd also wager that if you ever find yourself facing a court, you will be glad that our system puts the burden of proof on the prosecution.
JMHO