I doubt anyone is offended. I'm certainly not.
I think I see where you are going with this now. I would possibly look into a wine tasting class or gathering of some sort at a local tasting room. Or if you have a friend that is very experienced with tasting and can actually describe things to you, pair foods, etc, that could work out. This is sort of similar to seeing a PGA Pro for golf lessons btw, the person needs to have some skill and experience!
Classes are offered almost everywhere, at least out here. You will likely be tasting a lot of wines from CA and South America, some Europe and "down under." I sort of learned things by utilizing a LOT of experimentation, various "wine of the month clubs," etc. With a lot of trial and error, a lot of money spent on wine that I didn't like, and my girlfriend and I going to tasting rooms here and there, I have my palate figured out for the most part, and can appreciate wines that don't fit my palate exactly.
Being from California, it's very easy for us to find a tasting room at a winery that actually grows their own grapes on site. Other places buy grapes and processes them at their location, those are good too. You may find places such as the latter locally, but they may be expensive since grapes don't travel well, and they need to be crushed fairly quickly after picking. More than likely you will have tasting rooms offering non-local wines bottled well beyond your states borders; however, I don't know much about growing grapes in SC, I could be totally wrong!
Regarding your issue with a wine tasting sour or having a bad aftertaste, maybe that could be resolved with a proper food pairing. Maybe take your wife to a fine restaurant that is known to have an extensive wine selection, and ask the server, host, etc, for suggestions on pairing a wine with your meal, cheese, fruit, chocolate, etc. You will be surprised how well a certain food will make a wine taste. Don't be shy to tell them that you don't know a thing about pairing food/wine and you would like to learn so long as they have the time to explain some things.
Tasting wine is not always a conscious thing, which is what you seem to be trying to make it out to be. That can complicate things, just like with a golf swing. Sometimes you just need to have the right pairing and take a
SWI
n
G
!