Sab, I persoanlly haven't seen any solid evidence they exist, but it is possible they are an extant and as yet undiscovered great ape, as we are. However, without any evidence, it is impossible to say more.
If it was a great ape, isn't it extremely odd that we haven't found a single bone to examine? That seems to be the largest inconsistency in all this Sasquatch stuff, no DNA (at least I don't think). Could this be explained by their level of intelligence? If they are indeed another version of us their intelligence and it's capabilties would be a mystery to us, but we'd expect it to be very developed this late in the game. If there were very few in number and they buried their dead, maybe that explains why we don't have any bones? This is an exciting mystery to me. I have watched a lot of the Finding Bigfoot episodes. I like how they have the skeptic because if they didn't have her on the team it would look even more silly than it already does. She keeps them grounded. However, they have had some interesting encounters going out in the woods around North America. It does seem plausible that there is another species of human in our woodland areas. I think that the score needs to be settled once and for all. WHAT IS BIGFOOT?
-Sab