no one , including the Jehovah's witnesses , can carte-blache state that satan will NEVER appologise;
as to heaven and hell; maybe we do all end up in the same place ; for those who love God it will be heaven; for those who do NOT, to live IN perpetual love will be HELL
it is also said that , when one does die and finally meets our Creator God , you will be so overwhelmed BY Him and His compassion and love and forgiveness that you WILL WANT to turn to him and accept him willingly
to be separated from God is hell in itself but , unless you have known God (had experience OF His love in your life) and His love, you cannot appreciate that point