Good on replacing the switch, as even though fused it's no longer safe to have in the power circuit.
+1 @dekay
Although the defective power switch contacts stuck together, you will never know when it will decide to come loose, create arcing heat up the contacts, worst case scenario is burn out the surrounding wires/components or even catch fire!
BTW, the power switch is a snap-in design with quick disconnect terminals, just take a few minutes to replace and no soldering required.