Teflon tape can take the place of a good thread sealant, but there are plenty of other alternatives. Occasionally you even hear stories about people confusing thread sealants with thread lubricants or, worse, thread lockers.
Worse still, you may someday be told not to use super glue on threads, and the admonishment could end with, “Ask me how I know.” Duct tape isn’t the only substance that holds the universe together.
I’ve always preferred Teflon tape, because that’s what my dad used. Do you choose Teflon tape over the alternatives? Why, or why not?