You can believe in invisible pink flamingos. Just don't make false statements about what evidence is available to back you up.
If you require physical evidence to support your belief in miracles you are going to have trouble.
I suppose I could. I just don't have any evidence that causes me to go in that direction. Besides, it tends against faith when I know you pulled that notion out of your own behind. A fossil record denoting worldwide death is not so easily fabricated, either in theory or in the physical world, as are invisible pink flamingos.