I've done it. And it wasn't a pleasant or positive experience.
Jurors were mostly making decisions based on their heart, not evidence or logic, it was extremely ridiculous that someone's life course was being decided by the equivalent to a group of gossiping busybodies (I was young 20s, everyone else 50s,60s mostly retired white middle class types).
I was also shocked at some lax court processes, being specific would be too outing but there wasn't good separation of defense witness control Vs us jurors... I actually asked the court clerk if someone had messed up but apparently that was normal protocol. Didn't find it felt safe for me tbh, there's no way the mingling of people attending court should happen like it did. I lived in the area of one of the accused, and they read out our living location when declaring our ID to go into the jury area?!?!?? In public?!? I hope they've changed this whole process since, I fed it back.
Finally, I thought the sentencing was a farce. We listened to evidence of a fairly horrific crime, deliberated, and the bastards (who we were later told had similar convictions, strings of them) got let out due to time spent waiting for the trial, and the victim restitution was something like 50p taken off their benefits for 26 weeks.
Total fucking joke, the whole circus.
I've never questioned the validity or fitness for purpose of our justice system until that experience.