Well of course you shouldn't ever dose a child for your sake.
And if gels and breastfeeding are settling him, then he doesn't need it.
But the times when they don't - then, if your choice is leaving him to cry in pain or giving him a painkiller, I think it is mean to withhold it.
Don't dose him for your sake, but don't not-dose him for your sake either (because you want to be the kind of mother who doesn't use it).
IME the single best thing for getting through teething is sleep. So it's easier for a child who sleeps well and doesn't wake frequently than a child who wakes several times a night, because they sleep through the pain.
This has a knock-on effect the next day because tiredness makes the child less well able to cope the next day.
So if he's waking but easily getting back to sleep with cuddles, bfing, gel, then great, if he's in too much pain to get back to sleep then give him calpol, I would also give calpol if the pain is causing him to wake more frequently than usual.
Sleep is really good for babies, not just for their parents.