The van life most social media sells is bullshit. The people that actually make it work for a lifestyle tend to have jobs that let them work remote, and travel constantly with the seasons. From a temperature comfort perspective Springfield is gonna suck to live out of a van in 8 months out of 12.

Also don't underestimate the costs involved. Living in a van is not free rent. You'll need to move almost daily to avoid hassles, and your van will probably get bad gas mileage. Have to run the van for power or have an alternative plan (obvious solar on the van makes you a target for cops and thieves). Heat in the winter, resources to cook food and keep food cold. Here you'd need to run the van in the summer to cool off too, or have an alternate plan for that. Gym membership or another plan to keep up your personal hygiene as a clean and well groomed vanlifer is less of a target for authority than a dirty one. It's just the way you're perceived.

A cheap van will break down. You'll need to either know how to maintain the van yourself and carry the tools to do so, or have a plan for where to live for 2 days every time your house needs a new water pump or something. You'll be using it a lot more than a vehicle you just drive to work, so count on maintenance being more expensive.