I use layaway whenever practical.
Because I can. Because most of what I buy are discontinued models or out of business manufacturers, or used guns of current production models. I haven't bought a new production gun from a current maker in years, and may not ever do so again.
I like layaway, because I know the gun will be there when I have saved up and paid it off. Nothing worse than saving up for something that sat on the shelf for weeks/months while you saved up, only to have sombody else buy it the week before you were ready.
For all of you who scoff at layaway, and are only interested in new guns in the popular models, enjoy yourself. For me, with an interest in the odd, unusual, and usually out of production, each gun is an individual, and the dealer cannot get another just like it, at the same price very often, if ever.
If I have the funds, I buy. But if I don't have them right then, or don't want to commit that much money in one lump at that time, layaway is the finest way to go. Gets you the gun, and doesn't leave you with $2.11 to your name until next month.