The House Fire (Arminian version):
Once upon a time there was a house on fire. Inside were three children. The dad was outside, and went in to rescue his children. He helped one child get out, but the other two refused to come. They died in the fire. Afterwords, forensics determined that the fire was lit by the children inside the house. They were playing with matches.
The House Fire (Calvinist version):
Once upon a time there was a house on fire. Inside were three children. The dad was outside, and went in to rescue one child. He took one child out, and left the other two to burn. They died in the fire. Afterwords, forensics determined that the fire was deliberately lit by the dad. The dad admitted that he planned the whole thing because he wanted to be a hero. He also claimed that he started the fire, but not in such a way that it was his fault.
Which dad do you think was a hero? Which dad has better motives? Which dad is double minded?
These analogies are not perfect, but they get the point across. Calvinists claim that their system gives God more glory. The reverse is true. Calvinism calls into question the very motives of God, and diminishes His glory. Any dad who deliberately starts a fire to burn his children is not worthy of being called a hero.