I should use some sort of snap but I'm superstitious when it comes to fishing and don't like to change the ritual.
I only use snap-swivels for crank baits. I use fast-snaps for connecting my pre-rigged double jig leaders for spider rigging and for regular jig set ups as well, it is easier to switch weight and color of jigs quickly. I do use just a swivel under my bobbers, this helps with line twists.
FISHING, no better way to spend the day!