Everybody buys at the airport except business travellers, and those who arrive at the last minute, which these days are few because the bloody security takes so long. But it is BS. In fairness at least the prices of buying stuff on the plane have been a bit less exorbitant the lass few years, though maybe that’s just because the prices in the outlets in the airport are the same.
By the way most people leave stuff in bags because they forget, in the rush etc. Having to have all that stuff organised for the check is not easy, especially for those with kids or who have been drinking German or Spanish bier for 3 days solid.
But here’s the thing, I’ve been to many airports in many places in the world, and in the last few years Dublin and British airports are the only ones that consistently applies the liquids thing, I mean making you take stuff out of the bag. Is it that the scanners in all other places can tell how much liquid you have, or the type of liquid? Or is it that in truth scientists know that there’s alot more to it than the liquids, the other elements needed can also be detected?