There's nothing egocentric about my remarks, Canary.
I'm fortunate enough at the moment to not be in need of medical treatment. But I know plenty of people that are. Some of them are seriously ill and all have paid taxes and NI all their adult lives. Their treatment is being jeopardised because of "lack of resources" whilst people such as Ms Cafferty are absenting themselves from the UK (where they could help with the unprecedented demand currently facing the NHS). Furthermore MS McCafferty is placing a demand upon the NHS herself which could be readily avoided had she not imperiled herself.
Volunteering overseas is very laudable provided everything is hunky-dory at home. But it's not. People pay taxes in the expectation that when they need medical treatment it will be readily available. Yet only today a number of hospitals reported declaring emergencies because they were unable to meet demand. Such a sitation is not helped when trained medics take themselves off to disease ridden areas and return with a highly infectious life-threatening illness.