Here's my take for one of the reasons: JW's perceive ANYONE who asks the wrong questions as a hater of Jehovah and a persecuter. They think Jesus had them in mind here:
John 17: 14
The word of God isn't what's important to them.... it's the state of being hated that drives their psychology. Never mind that the lies, arrogance, judging, child molestation, abuse pay-outs, false prophecies, emploded families, misrepresentation of God, screwball bible translations, prohibitions on salvation, sports, college, careers, etc. triggers the exasperation of some. The fact that they feel hated is the only thing that's important and IS the drug that fuels their psychological perversion.
So, once they sense that you are against anything the WT does or says.... they have their hate fix; and just like any addict ...they're off to the next fix. No time for genuine authentic human interaction... that's just a waste of time that is prolonging their next hate fix.