UFO or Extraterrestrial Being?

though ive never seen an alien or a ufo for that matter. i just cannot believe that in all the vast universe (99.99% of which we havent a clue about lol) that we, earth, can be the ONLY planet that is so perfectly suited for life. its almost a mathmatical impossibility. that and there have been so so many reports of ufo's or abductions, that they cant ALL be hoaxes. i wont say that there are little green men in saucer shaped spacecraft out there..but SURELY there is some other forms of life, somewhere!