I do think there are others. I do not like how we only think a plantet needs water to support life. It only needs water to support EARTH born life. Earth born life needs water because it evolved from microbes in water. It used what it had. I believe it is entirely possible that other life forms adapted to what they had, living with whole different elements. We limit ourselves with this idea of Earth life. Think outside the box. Just like fish live underwater and we live above water. While oxygen is still involved, I think there are places where other gases are used for respiration, and things like that.

I've answered a similar question to this on my post in the general discussion.

Link to my post

I put a "My Favourite Questions" Section, and the question you'll want to read is the first one of them

With in our own Galaxy there could be another 1000 planets with life on them.

Let's get this topic going somewhere again why don't we?

I think somewhere billions and billions of miles away from the galaxy we are in there is another planet that has life.