Related discussion about the durability of Lego posted a few months ago on HN: https://news.ycombinator.com/item?id=5040545

PS: One of those strange and seemingly random usage differences between British and American English is the latter's use of a plural, "Legos" (or perhaps more accurate to say, use of the word "Lego" to denote "a Lego piece" with resultant plural), which is never used in the UK and always sounds odd to my ear (British Lego being like sheep ...)