Believe it or not, there are atheists here that compare gods to Bigfoot, fairies, unicorns, leprechauns, Nessie, etc. Shocking, I know.
Now that you've overcome the shock of this news and are settled back down in front of your screen, I have a question...
Personally, I find this to be a logical fallacy: a false analogy, because while there is no objective evidence of their existence, the purposes of these concepts are entirely different. One, in making the analogy, is also applying form to something that doesn't necessarily have form. I also find the comparison rather insulting to those who have had an experience of a god.
So I put it to you. Do you think it's reasonable to compare gods to these creatures? Why or why not?