I believe God performs miracles all the time. I do not consider it a miracle when an image of Christ or Mary (whom we have no idea what they looked like) appears on a tree stump or a soap smear on a window. I don't see any purpose being served in someone imitating the wounds of Christ by having red stains on their hands or in statues bleeding. Those are not miracles. Those are illusions.
For we have not followed cunningly devised fables, when we made known unto you the power and coming of our Lord Jesus Christ, but were eyewitnesses of his majesty. (2 Peter 1:16 KJV)
Oh I don't either....but none of those, you'll notice, are sanctioned by the Church. They are kinda goofy things most of them.
I don't see any purpose being served in someone imitating the wounds of Christ by having red stains on their hands or in statues bleeding. Those are not miracles. Those are illusions.
Well, forgive my impertinence P-Marlowe, but what does it matter whether you or I see any purpose in it? God doesn't need our permission, or our consent that something is "logical" or appropriate. All things according to His good pleasure, right?
You or I or anyone else are not compelled to believe in Padre Pio's stigmata. That's a prudential judgment, so if you are skeptical that's fine. But just don't hand the rationalists and skeptics their own victory by denying that it could happen on principle...because as you rightly recognized, that can easily be applied to every miracle in Scripture as well.
I'd recommend you investigate Padre Pio to determine whether it is an illusion or not. Do some intense research on it, and see where the preponderance of evidence lies. And deny it if you feel you must, but don't exclude it on principle.