Oh.
For the same reason as the double barrel colts.
Because it’s cool.
Even if its not practical you can write books and make movies where someone runs around with one.
“It shoots through schools”
People look for weapon on the internet and watch it blow up hams and turkeys, and mythbusters tells everybody why they would never want one...but secretly we all want one anyway we just don’t want it at what it actually costs.
Why do kids melt plastic army men with magnifying glasses, or put firecrackers in trash barrels.
The coolest non-typical guns ever were on “Gun Stories” on The Outdoors Channel: a right and left-handed pair of M 1911’s completely made from a meteorite.