Agree with fluffles - have taken my kids out for a trip to Australia - two weeks tagged onto Easter holidays - they experiened tropical and cool temperate rainforest, snorkelling in a coral reef, camping in a drought, Zoos, museums, beaches (at the end of a long day), amazing coastlines,seeing lots of wild annimals in their natural habitat, family bonds with thier antipodean cousins - among other things...I wasn't attempting to replicate school education, it was about broadening their outlook, they continued to read at length through the duration of our holiday - about all sorts of subjects.
It was in no way a lie on a beach all day holiday - I'd have been driven insane .
Our decision was based on weather, rather than price.
I don't really think a two week holiday during term time, from time to time, in isolation, leads to a bad work ethic...but would be interested in seeing some reseach to back up that claim.
My childhood memories almost entirely consist of holdays away - simple camping holidays - they feel like a very important time now - so I can completely understand why people choose to take their kids out of school for holidays during term time if that's all they can afford.