There do seem to be a lot of food around that you are expected to eat with you hands
Most of them were not around when I was young
for example
burgers are often eaten with hands - that is one reason why the bread is there
ALso - ribs
chicken wings
several things come witha dip and something to 'dip' in the dip to eat it - which involves hands
I think the multi cultural increases in society have increased out exposure to food from other places
and sometimes those places do things differently from us
which, in turn, can make people think about our "rules" and wonder if there is a good reason for some of them