They're not art (typically) they're design—they exist to solve a problem. They're not all trash, sometimes they're rather brilliant solutions to selling a product or service or experience (of course they're still selling).
Don't fall into the Is Not For Me = Trash line of thinking. It's intellectually lazy.
I 100% agree, when you're talking about the ads that are aired a hundred times a day on syndicated television. Then again, the shows are terrible, so I suppose it's fitting that the ads match.
However, what about Apple's 1984 ad? Or the BMW mini-movie advertisements they ran about 6 years ago?
There are some incredibly cool concept ads out there. They usually are not the ones broadcast, but if you watch the end of the year awards for the industry, there are some very creative minds working there. (And creating some impressive work).
Don't fall into the Is Not For Me = Trash line of thinking. It's intellectually lazy.