[aequitas]

You can, but if you need a one-of label or even just a handful, setting that up on a normal printer is a chore, (special paper, label offset, counting already used labels, etc). Label printers feed with rolls, which makes it easy to print and cut to size automatically (depending on if the roll is continuous or individual stickers).

I have a Brother QL which others have remarked in this thread as well. It has WiFi and everything, trivial to just create a label from your phone or computer.