My question is, why are we allowing Jewish claimants and gentiles who don't want to respectfully debate JFJ here to try to destroy JFJ, jewsforjesus.org, the JFJ/jewsforjesus.org forums, and those (Jewish and gentile) who are Christians

A gospel ministry operating under the power and guidance of the Holy Spirit cannot be destroyed (the dirt is thrown but falls to the ground without soiling the target); the same with individual believers.  We learn to watch and be patient when faced with continual opposition (for they are not opposing us so much as they are opposing Jesus Christ), and it keeps us from cocooning or having a false sense of what is about us.

It's an exercise in patience, and confidence in the power of the gospel.  For the educated, there's an educated answer here.  But whether understanding is simple or deep, it seems to divide at whether one is going to worship man or God.  There really is no in-between.  Man-centered worship doesn't bring peace, and it assures nothing.  And that incites the attacks on JFJ and the forums.

As we've seen lately, man-centered worship doesn't bring shalom; and actually assures that there may be tsuris about which one might start kvetshn, and I've kvetshned about so many things that I've gotten many veytikim.

Happily, there is a remedy for tsuris and kvetching.  As for veytikim, I know it has to do with pain (vey), but tikim I am at a loss as to its meaning.  The remedy for the pain and frustration associated with man-centered worship:

Psalm 146 - 1 Praise ye the LORD. Praise the LORD, O my soul.  2 While I live will I praise the LORD: I will sing praises unto my God while I have any being.  3 Put not your trust in princes, nor in the son of man, in whom there is no help.
  

1 "A man with crushed or damaged private parts may not enter the assembly of ADONAI. 2 "A mamzer may not enter the assembly of ADONAI, nor may his descendants down to the tenth generation enter the assembly of ADONAI. 3 "No 'Amoni or Mo'avi may enter the assembly of ADONAI, nor may any of his descendants down to the tenth generation ever enter the assembly of ADONAI, 4 because they did not supply you with food and water when you were on the road after leaving Egypt, and because they hired Bil'am the son of B'or from P'tor in Aram-Naharayim to put a curse on you. 5 But ADONAI your God would not listen to Bil'am; rather, ADONAI your God turned the curse into a blessing for you; because ADONAI your God loved you. 6 So you are never to seek their peace or well being, as long as you live. 7 "But you are not to detest an Edomi, because he is your brother; and you are not to detest an Egyptian, because you lived as a foreigner in his land. 8 The third generation of children born to them may enter the assembly of ADONAI.