As to the question why convert a Christian from one form of Christianity to another, there are 3 answers.
1. Cults are damaging.
2. Deaths from the blood issue
3. Shunning loved ones
True.
I feel much more at ease hanging out with my Methodist (vs JW) coworker because:
a) he's at ease with me as well (I'm not some 'worldly' barbarian).
b) the topic of conversation doesn't revolve around all things Methodist, and he's not pushing me into a 'Bible study.'
c) he probably doesn't shun his daughter for marrying a Baptist.
d) if there's a city-wide flood or other disaster, I know that his group (among others) will offer me food & shelter., Wish I could say the same thing about JWs.
JWs are a cult. Anything you can do to get the wheels turning in their individual minds is fine, as long as you don't stoop to their level and make it 'my way, or the high-way.' But, that's the problem. What you, I, or the Methodist fella might see as an open, two-way discussion about faith, a JW (in my experience) sees as a one-sided battle of the wills. They've always talked AT ME, not WITH ME. So frustrating.