That is such a WTS question, based on the arrogance that only they are happy, have meaningful lives and know truth. It comes from years of training that you are nothing without the organisation. In reality people in general have purpose and meaning, the majority of people in surveys claim to believe in God and to be happy.
Leaving was such a huge relief from a life time of manipulation and guilt. It is great to be able to think and feel as an individual, based on freedom of choice. Is that not what God gave Adam?