Their self-esteem rises. They have a flood of happy memories. In short, life is worth living. Moderate drinkers are, on the average, of higher intelligence than either non-drinkers or heavy drinkers. Moderate drinkers routinely have higher education status than non-drinkers.
Sulfite production is a normal by-product of most forms of life.
Just keep in mind that most wines contain very little sulfite. True allergies to wine are extremely rare. This is my area of expertise. I was a physician in active practice for 25 years, and actively looking for wine allergies. The Fetal Alcohol Syndrome occurs only in the chronic alcoholic.