> In 2012, when the average wedding cost was $27,427, the median was $18,086. In 2011, when the average was $27,021, the median was $16,886. In Manhattan, where the widely reported average is $76,687, the median is $55,104. And in Alaska, where the average is $15,504, the median is a mere $8,440.
Luckily, these are not national figures, merely numbers reported by visitors of a particular website. Unfortunately, I couldn't find any more representative numbers, especially with expenses measured against income level.
[1] http://www.slate.com/articles/life/weddings/2013/06/average_...
Maybe for some, but having an expensive wedding is usually unavoidable when the basics (venue and food) are the bulk of that cost.
This may be a common mistake, but it is a mistake nonetheless.
Edit: Grammar. :)
That seems prescriptivist.
If people take "Mother-in-law" to be a single word, then it is a single word. And if they take "Mother-in-laws" to be the plural of this word, then it is the plural of that word.
Language is determined by usage. People do not say "s-in-law" , they say "in-laws".
I don't mean that you can't have a preference that usage be a particular way. I might even encourage it. If you prefer people using "mothers-in-law" over "mother-in-laws" for the reasons you gave, that's fair. Go ahead and try to convince people to say it that way. Maybe they will agree with you, that doing it only that way has advantages. I can certainly see doing it that way having advantages in some cases.
But for it to be "wrong", there has to be some standard for it to be "wrong" by.
When speaking about english as it is spoken, the standard is pretty much the ways in which people speak it.
[/overconfident(?) comment by someone who has taken exactly one (1) linguistics class]