though i do have a serious question, several of my friends have said starting to do this at age 17/18 is too late in life… theyre not right ofcourse, but did anyone have problems with this if they started when they were older?

most of my friends who do poi/juggling are in their late teens and started around age 16-18. They are all good at it!

Practice will of course make people improve and you need a level of physical fitness; but this is a performing art rather than a competitive athletic activity.

Provided people have good hand-eye coordination to start with, I don’t see why they could not start at any age!