Belief is a perception. I personally do not believe in rebirths if considered from a "spiritual" point of view.
But think about it this way- We do lots of work daily, be it of any kind. We are able to work because we are "alive". And when we sleep, it's like a "temporary death"; and we are reborn the next day with a whole lot of energy and new experiences and adventures...
So, aren't we reborn?
It is just a matter of opinion; so I leave this to you: Do YOU believe in rebirths?
Hope it helps :)