I bought one on holiday after spending a fortune at the 99p shop and I couldn't carry it all home. I also decided it would be really useful on caravan holidays when I take the food in, wheel it rather than carry it.
DD then wanted one, "to be like Mummy and Nana" . I said no, she cried, Nana bought it. So then there were three of us wheeling them up the road, aged 67, 42, and 6!!
I did feel a bit of a granny wheeling it along...... But it was so useful!