Mostly for the pure enjoyment of it.
Unless you're talking about the .22, the advantages are pretty much subjective. I have lever guns in .44 magnum, .308, .357 magnum, 30-30, .22 magnum, and .22 s,l,lr.
For most, a semi or bolt would serve as well, practically speaking.
The .22 though...
The lever-action .22 is an entirely different and decidedly superior thing. The semi won't reliably feed and won't auto cycle at all with anything but .22lr. I can shoot .22 lr, l, short, and even powderless ammo in any of my lever .22s w/o problem. I can also do that, of course in most bolt .22s, but not nearly as fast and not nearly as much fun. (Okay, it's not unique; the pump will do the same but is usually more difficult to find, not usually available in carbine lengths, and not quite as much fun).
W.
Unless you're talking about the .22, the advantages are pretty much subjective. I have lever guns in .44 magnum, .308, .357 magnum, 30-30, .22 magnum, and .22 s,l,lr.
For most, a semi or bolt would serve as well, practically speaking.
The .22 though...
The lever-action .22 is an entirely different and decidedly superior thing. The semi won't reliably feed and won't auto cycle at all with anything but .22lr. I can shoot .22 lr, l, short, and even powderless ammo in any of my lever .22s w/o problem. I can also do that, of course in most bolt .22s, but not nearly as fast and not nearly as much fun. (Okay, it's not unique; the pump will do the same but is usually more difficult to find, not usually available in carbine lengths, and not quite as much fun).
W.