Be careful what you wish for, it might come true!
Many times we want things we do not fully understand. Or we don't understand where this route may take us.
A mother was tired by being mother. One day the child was seriously injured by a car . He was taken to hospital and emergency surgery. The child was recovered in a few weeks but she realized what gravity would have been in her life if her had remained childless. From that day, this evil thought was never in her mind.
So, very careful!