I recently bought a rucksack so that I could go for regular walks and food shop at the same time. Having camped/hiked in the past, I bought a rucksack, which was properly designed to carry weight in comfort. The rucksack sits on a lightweight, mesh covered frame that allows air to circulate round my back, has wide padded shoulder straps, a chest strap and deep, built-up belt straps that grip round my waist. I was surprised by how much weight I could carry this way.
I have used a pull-along trolley but seem to clip my heels with it as I’m walking. I find I can stride out better carrying a rucksack!