YAY, a wine thread!
I love wine. Wine tasting is one of my hobbies.
Tannins are not bad for you!

They are said to be healthy - but I don't drink wine for health reasons, just for taste, and it is true that
young cabernet sauvignons can be too tannic. (Steak makes too tannic wines milder, so if you like steak, drink a cabernet with it!) But tannins are necessary for aging (of wine, but actually also of people

) - wines with too little tannins do not age well (which is why white wines in general don't age as well as reds - exceptions are some sweet wines like sauternes and riesling - whites have less tannins than reds). Tannins become smoother with age. Tannins are something that is in grape seeds and skins.
I can't advise on American wine because I don't often drink it - it's hard to get here, and only Californian wine is sold here, not from elsewhere in the US. Canadian is impossible to get here (shame - I'd love to taste their icewines!).
I really can't advise on French wines too, because I don't know your taste, experience and budget. And I have no idea what the prices are of French wines in the US. But I drink a lot of French wines (I'm not an alcoholic by the way

), and if you like cabernet sauvignons you will like wines from the Bordeaux region - they are usually a blend of cabernet sauvignon, merlot, cabernet franc, and maybe a fourth one but if so it escapes me right now. Expensive wines are from the smaller Appellations, like Pauillac, St. Estèphe, St. Julien, St. Emilion (merlot), Margaux, Pomerol (merlot), but cheaper wines are to be found there too: Entre-deux-mers, Bordeaux, Médoc, etc.
I also like Australian shiraz, and South African pinotage. Carmenère from Chili can be good.
I like white wines from the Alsace in France: pinot blanc, pinot gris, gewürztraminer, riesling. I like Austrian rieslings too. I haven't had many German rieslings yet - usually they are lower in alcohol (8-9% instead of, say, 12-14%). I like the Austrian Grüner Veltliner too, and sauvignon blanc from New Zealand, and torrontés from Argentina.
We need a wine cellar.
Would it be too much off-topic to discuss beer snobbery here? Should we start a separate beer thread? I love belgian and certain german and dutch beers.