Why not?
If I were calling coyotes on the prairie and I needed quick follow up shots, I'd use an AR style semi auto. If I were hunting dangerous game I'd probably use a double rifle. A lever gun is faster that a bolt if you know how to use it. How many times do you recall needing an immediate second shot. Single shots can be lighter and shorter. One is not limited to magazine length for cartridge OAL. Actions on single shots can be very strong. With single shots such as the Thompson/Center Contender or Encore one can interchange barrels ad infinitum.
Here are a few more reasons why I own single shots, but these are purely subjective.

Best

GWB

[Linked Image]
Cooper model 21, 20 Tactical,

[Linked Image]
Winchester High Wall, 270 WSM

[Linked Image]
Remington 700, 7 STW (yes its a singleshot)

[Linked Image]
Browning High Wall, 30-06

[Linked Image]
Cooper model 38, 22 hornet

[Linked Image]
Cooper model 22, 6.5 x 284

[img]http://i38.photobucket.com/albums/e129/glenn1221/latestgunstuff/DSCN7396.jpg[/img]
Remington 700, 22-250

[img]http://i38.photobucket.com/albums/e129/glenn1221/Bear%20Hunt/IMG_0161.jpg[/img]
Merkel K1 7mm-08

[img]http://i38.photobucket.com/albums/e129/glenn1221/DSCN5954.jpg[/img]
Ruger #1, 458 Lott
[img]http://i38.photobucket.com/albums/e129/glenn1221/DSCN5770.jpg[/img]
Martini custom, 30-30 WCF


Last edited by geedubya; 10/17/12.
A Kill Artist. When I draw, I draw blood.