Answer:
What is it that no man ever saw, which never was, but always will be?
What do cheetas, dalmatians and appaloosas have in common?
What cleans as it gets dirty only to get clean the more you use it?
I'm a long curved fruit that grows in clusters and has soft pulpy flesh and yellow skin when ripe.
I have joy in bringing two together, but darning my existence! My life hangs by a thread, filled with ups, downs and resistance!
I touch the Earth, I touch the sky, but if I touch you, you’ll likely die. What am I?