I think it gets boring (for the audience) for the lead singer to have a guitar hanging on them all the time.
There is no age, height, or weight requirement to skate. It is good exercise no matter what your age is. If you want to be competitive, most start young. But, I practice with many adult competitors.
I think back a little bit when President Bush was elected President and what kind of economy he inherited from the Clinton administration. The economy was going down. It was not doing well.