a couple more ideas on what you might give as reasons for not being at the meetings:
I think (IMHO) there are a couple of points you can make that are difficult to argue with:
1 - my conscience won't allow me to remain affiliated with an organisation that <rewrites its own history, has no mechanism in place to address dissent, appears to have lost Jehovahs blessing, has a history of failing to comply with child protection laws in many countries and giving more rights to molestors than victims or whatever you feel you can make a case for> My conscience has troubled me for years and I can't ignore it any more...etc lay it on thick
2 - I do not feel that my children are safe in the congregation. There is a problem with child molestors - nobody denies that - the WTS has even paid out of court in to make the allegations against Brooklyn Bethel go away quietly. Lets take a situation that occurs all the time in KH's all over the world. A known molestor moves in from another KH, for whatever reason. (Even worse if it was an unknown molestor but anyway...)Why do elders children have a better level of protection than ours? Or Sister Single with 3 kids? Even if I get tipped of by a friendly or family elder, what is the procedure to alert everybody that so and so is a child molestor? Is it all done on a nod and a wink? Also my conscience will not allow me to prevent my child receiving medical care that today is banned by the WTS but tomorrow might be permissible. Or let me put this another way. What is the biblical basis for the blood fraction policy? <emphasis on fraction> Until I can see significant change to those 2 issues I can't feel that being affiliated with the JW's is in the best interests of the children.
Hope that ramble makes sense and gives you some ideas - your conscience and the present safety of your children cannot be explained away by light getting brighter or the other usual thought stoppers...