I enjoy it. Some places have a rota system if there are enough people. Where I am I just book on when I can as there aren't enough responders to do a rota.
Generally most of the patients I see are breathing problems/ chest pain or falls. Most are genuine and in need
When I first started some of the ambulance crews were anti CFRs but that's not the case now. Most crews encourage and even help to train and give extra to help to CFRs - showing how to put a line in, explaining this particular case, completing forms etc.
Some of the CFRs I know have gone on to become ECA or technicians (ambulance crews but not as qualified as paramedics) none have done the full Para qualification as far as I know.
I would do more if I had the time
Does that help?