F'real they're just better SUVs. I tried googling it, but the internet's very helpful answers were "they're not cool" and "SUVs are more popular." I'm convinced it's manufactured desire. What really happened to the minivan?
Edit: Apparently wagons and minivans still exist, they're just sold as SUVs.
There's a few compact hatchbacks like the Golf sold in the USA but they stopped selling the Passat wagon a few years ago. Most automakers stopped selling mid-size or full-size wagons in the USA at least 10 years ago.