Because they might want to live in the real world?
Ah, but in the real world they're small and insignificant. In their own world, they are (figuratively and some believe literally) the center of a universe which was created just for them!
Honestly though, I don't have much of a problem with miracles. I think you have noticed this yourself... and questioned why. Events that occur very rarely have little impact on our ability to understand the world around us. If Jesus did resurrect himself once as a miracle, that would have little effect on the question of what happens to the dead today.
I do have a problem with miracles -- as AV is in the midst of kindly demonstrating, they distract people away from unpleasant truths.
Now, this, in and of itself, wouldn't be all that special, but the fact that the delusional world miracles create is
always a self-serving one only serves to make the people who believe in it even more obnoxious and self important. Why? Because "miracles" only ever happen in their favor -- God breaks His rules
just for them.
The problem as I see it, is when "miracle physics" is applied to the broader picture, like the age of the earth, common descent, the history of the universe, etc. The so-called "vapor canopy" and Split/merge dadology are good examples of this. Then you have what I will now refer to as "Fantasy Physics." Its when Christians move into Fantasy Physics that I have a problem.
Well, that's the only reason to believe in "miracle physics" -- to extend it to fantasy physics. Because once one has God eating out of their hands, who gives a fig about physics? Sic your pet God on anything whcih threatens to inconvenience you!
When one lives in a world which God can manipulate to His wishes, and expects Him to do so regularly, then one's ultimate religious goal becomes to manipulate God for one's own benefit. The object of such religious "worship" becomes to cajole God into abandoning His great plan in favor of a series of improvised "miracles" which grant you what you want -- or worse, quelling His wrath so that He never sets His power
against you -- not that a truly "religious" person would ever consider that possibility.
Consider: On April 21, 2011, Texas Governor Rick Perry issues a public proclamation praying for rain at the beginning of a major drought season in Texas.
Office of the Governor Rick Perry - [Proclamation] Gov. Perry Issues Proclamation for Days of Prayer for Rain in Texas
No rain came. In fact, 2011 became the driest year in Texas history -- costing the state over $7.62 billion in crop and livestock losses, and another $5 billion in wildfire damage.
So... what went wrong? I think that "miracle physics" would show that God either hates Texas, hates Rick Perry, hates people complaining about the weather, or maybe all of the above. Who's with me?
Nobody, of course -- "miracle physics" would've only been invoked if it
had rained, right?