why is it so evil to just use them as the primary mode of transportation?
"Evil"? You're arguing with a ghost now. There's nothing evil about roads or about cars or about mass transit. They are all modes of transport that are built or subsidized by the commons in order to serve people.
Any human institution can only be measured by how well it serves people. You seem angry at mass transit for some reason. Maybe because it doesn't serve you. But that's not the yardstick for decisions made by societies. Not how well it serves you but how well it serves us.
forced to use expensive, limiting, and impersonal transportation methods.
Mass transit, at least in my city, costs less (including "subsidies") per mile traveled than cars. And "impersonal"? Is that the problem here, that you can't hang your fuzzy dice and truck nuts on your friendly neighborhood transit car? Is this about you being behind the wheel of your own personal 3000 lb turbo-charged locomotive, the way God intended?
The good news is that nobody cares what you drive. But communities have to work. And more people in the US now live in cities than in rural areas. This is not because of the gummint, but because that's the way business likes it. Lots of consumers and lots of workers in one place.
But I'm still trying to wrap my head around "impersonal". I can't imagine anything more "impersonal" than the millions of Toyota Camry lookalikes and mommy SUV's clogging up the nation's roadways, each with one person behind the wheel. Each better than a ton of refined oil-burning, hydrocarbon-belching steel and plastic, just so that one person can get the average 6.2 miles that they queue up to crawl each day. I'll have to remember "impersonal". At least my bike has multicolored streamers coming out of the handlebars, and an officially licensed Chicago White Sox banner flying above so one of the Camry clones doesn't run me over because the driver is too busy texting to notice the fool passing them by on the recumbent bike.