I think that Lady Lee makes a good point. Many have spent so long that they don't/can't give up now. I do detect a certain sadness and sense of frustration amoungst the old-timers, my mom and dad included, that they don't seem the end coming in their life-time.
If the leadership had the courage to say we simply don't know, to lessen the emphasis on the 'preaching work' and move more towards being far more charitable and Christian, may be I would still be in. But as it is, I cannot see that they are anywhere near being on theright spiritual path.
PS Just read Siddartha by Herman Hesse - a great parable of one man's search for his own spiritual path