Because without messy bloodstains on the upholstery, murdering your spouse is soooooo much easier.
And "Hairspray" without a man playing the woman is just stupid.
It's like doing "Charley's Aunt" with a woman in the role. Why bother?
John Waters wrote the movie for a man and it would insult his creation to do otherwise (plus, I would assume his lawyers dealt with that in the rights agreement.)
http://www.broadwayworld.com/board/readmessage.cfm?thread=972787#3631451
http://www.broadwayworld.com/board/readmessage.cfm?thread=963561#3533883
http://www.broadwayworld.com/board/readmessage.cfm?thread=955158#3440952
http://www.broadwayworld.com/board/readmessage.cfm?thread=954269#3427915
http://www.broadwayworld.com/board/readmessage.cfm?thread=955012#3441622
http://www.broadwayworld.com/board/readmessage.cfm?thread=954344#3428699