I think it makes rational sense to consider the universe closed, but you are right - the evidence points towards an open universe; mathematically it makes more sense anyway.
The current models of the universe have it drawn as a rough sphere, so I don't know what the future shape will hold. If our rate of expansion and the dark energy that seems to be hurling us away from every other galaxy then I don't see how it could retain this spherical shape. But I don't know enough about the entropic premises to understand the conclusions.
Rationally it makes more sense because we, as humans, try and force ourselves to believe what sounds better to us. Case in point: There are still people who deny global warming. But the open universe makes sense, when you think about it.
