I agree, there are always some misinformed posts on MN where health related topics are concerned!
My daughter has been hospitalised with an ear infection that had spread to the mastoid area, so yes they can be serious in those who are vulnerable in some way. And she routinely has her ear infections swabbed at the hospital, because she has been on prophylactic antibiotics for a few years, and takes many treatment courses on top, resistance has been a huge problem for her, and she has often required next line IVs to clear them. Even a simple eColi Uti became a big problem last year.
GPs don't routinely swab ears, because for most children, the first line is usually sufficient, and as somebody already posted, the majority of ear related infections, are of viral origin, and don't necessarily need antibiotics at all.
It is indeed often difficult for doctors to identify the patients that need more than reassurance. In the case of cancer, both my parents passed away quite young, and getting their diagnosis was a minefield. And I know many people who have had similar stories. But I can understand that GPs have to follow some form of referral protocol, otherwise there would be mayhem! If initial tests don't reveal anything untoward, then the pathway seems to be put on hold, unfortunately with detrimental outcomes for some.
As for assessing a sick child however, I do think GPs can and should do more. A cursory glance based on professional experience, is just not always sufficient. Some children do not present in a typical way, and my child certainly hasn't on every ocassion. A&E triage patients with a simple, heart rate, temp, sats score etc, and yet our GP has never done this. It takes a mere couple of minutes, so why is it so often overlooked. When I stressed to my GP that I was concerned about my daughter's HR, she dismissed it as simply fever related, and perfectly normal. She didn't check it herself, she simply dismissed my concerns. So I took her straight to A&E, and as soon as she was triaged, (HR was almost 200 (high for an 8 yr old!) and her BP had started to drop dangerously low), she was admitted as an emergency. Blood cultures revealed she had invasive scepticaemia. But our very experienced GP, did not think she LOOKED ill.
It's just not acceptable sometimes, and for every how ever many thousand kids that may be fine, there will be one that warranted more.
Yes the NHS is struggling to do the best it can, and we as a family are hugely grateful and have huge respect for the many people who give it their all, but it's over stretched and under funded, and I think it's high time that people started contributing in some way.