Just in case you were wondering, I LOVE primary.
I conducted today (which I don't usually do because I'm the secretary, but the Primary President was out of town so I filled in for her) and it didn't take long for me to be in tears. In Junior primary (ages 3-7) I became a weepy mess in just minutes as a 4 year old stood with his mouth against the microphone and gave a talk as his dad whispered words of truth into his ear. It was painfully cute, but what did me in was the presence of the Spirit as he spoke. I think the kids all felt it too because the room was remarkably peaceful for our large junior primary. It was also cool to watch the boy's mom stand in the back watching her husband and son together like that, I know she felt great too.
Then in Senior Primary (ages 8-12) I lost it again after an 11 year old boy gave his last talk in primary since he will be turning 12 and moving on to Young Men soon. I have seen him grow up and I remember his older brother (who is now 17) whispering in his ear years ago to help him give a talk. Now the older brother is getting ready to go on a mission and this boy is now a confident 11 year old who did a fantastic job by himself and closed with his testimony. I had to pull myself together after the combination of this memory and his talk.
The gospel is remarkable, and primary is the place where the kids learn it in its purest form. I love the lessons we learn as we sing and I often look around the room and see the adults actively engaged and learning right along with the kids...we're never too old to be in primary!