Debating a Jehovah's Witness is a lose-lose.
Why?
Fella JW's want to see you lose your cool and demonstrate your low-life status. When you engage it is easy to have the worst of your nature brought to the surface because you are confronting an ideology which has injured you and the repressed hostility will come out.
Further, you are actually dealing with a JW who is flexing their own personal ego. They don't represent the religion. The religion does not engage in debate with previous members.
Unless you define your terms precisely and scrupulously you'll waste hours chasing each other's tail.
Foundational arguments must be parsed ahead of time to root out key concepts that are falsely defined.
Who has the patience for that?
Finally, the basis for JW belief is said to be the inerrent Bible.
This really should be the only possible debate: the inerrency of the Bible. It is easy to refute.
But, no.....we all get sucked in to a scripture parsing ceremony that goes nowhere.
It is a waste of time.