Superbeagle, that might be the case where you are in Australia, but unless there was clinical evidence, it wouldn't be offered, under the NHS, the way it is. You've got to take on board the advice for your Country/Region.
All my family have had it, Adults and children.
It isn't just those with compromised immune systems that are at risk.
An added worry, is that some antibiotics, for some people/conditions have stopped working. So the complications/side issues, chest infections etc, could kill. The 5000 (at least) people that die because the antibiotics wasn't effective and developed Sepsis etc, were previously healthy.
There have been some very tragic stories of healthy children in that number, because children are at greater risk.
Other precautions, like hand washing, covering the mouth when coughing, self care to aid recovery, need to be taken onboard.