Personal preference. Since they seem to sell I'd guess there's enough that like them OR don't dislike them enough to pass on them. Could also be that it's cheaper to produce them that way and it helps keep costs down.

JYD #126
Super JYD #13

"Those who would give up essential liberty to purchase a little temporary safety, deserve neither liberty nor safety."

- Benjamin Franklin

"A free people ought to be armed."

- George Washington