But presumably you didn't have a thoroughly distressed child Tovik, which is why you found Calpol unnecessary, hence I can't possibly be calling parents like you "stupid", can I?
Do you think many parents like giving DC lots of meds?
Triple dosing the Calpol-Nurofen-AntiBs happened with DD, she had antiB-resistant UTI, it can take a week to get the cultures back and get the right anti-B for whichever bacteria, hence why she was on Calpol-nurofen+AntiBs together. Untreated bad UTIs in little girls can mean needing a kidney transplant later, not a problem to take lightly. Plus UTIs lead to notoriously high temps; I couldn't expect DD to sleep in a cool bath. The slightly-wrong antiBs did help to control if not eradicate the problem; the alternatives would have been her screaming in desperate pain every time she had to wee -- we had 3 days of that before we got to see GP for first antiB prescrip, that was enough - I would have tried almost every med possible to relieve her distress. Without Nurofen she might well have proceeded to febrile convulsions (because Calpol alone just can't touch the pain or fever that UTIs can bring on).
For the ear infec we didn't have all 3 combined, but did have Calpol+Nurofen together, I shudder to think what would have happened without. I suspected DS had ear infec but doc couldn't see it (fair enough). Next 3 nights DS had extreme high fever and was in obvious agony; I could barely keep him comfy (still hot and unhappy) on Calpol+Nurofen. Then his eardrum burst and the fever disappeared. His ear oozed gunk for 6 days before I took him to GP to ask if maybe we should have antiBs after all, I hated asking for them but preschool+ doc+me all felt that 9 days was enough to see if it would sort itself.
Luckily that was a one-off. But if DS had a chronic pattern of getting painful bad ear infex, and I didn't feel I could take chances with his ears any more, I could easily imagine a scenario of double dosing the pain meds when starting an antiB course.
There are times when meds, including pain meds, have some real advantages in managing health. Don't be so anti-meds in principle for everyone else.