My issues with wine started at a time when I was having all kinds of allergies and asthma issues. I went like 10 years without drinking it, way past the time when my allergies resolved.
However, there are wines without sulfites. I remember back in 1988, having dinner in a vegetarian restaurant, and they had organic wines, without sulfites.
I don't notice any weight gain with having one glass of red wine, most nights of the week. I have tested this numerous times, too, in my quest to figure out why I seem to gain/lose with no apparent trigger. Of course, if I started having more, or I drink a lot of beer, it does affect my weight.