I moved to Idaho a several years ago and went through the same experience. I showed up in my Toyota Corolla and everyone kept saying it was a "cute car". This was just a normal car in Seattle. But here everyone was like, "oh how cute... a little Corolla". I also got comments from co-workers that were like "oh does your wife drive your truck?"
Here every family basically owns a pickup. Idaho has a lot of BLM land, (second in size only to Alaska). So sports like boating, RVing, and ATVing are very popular here. As we got more ingrained into the culture here, that is very outdoor activity oriented, we decided that with a truck we could own an RV. We have always been huge mountain bike riders and the convenience that a truck offers for mountain biking is incredible. We also drove in friend's trucks and realized that with the Platinum trim from F-150 for example, you get a very luxurious experience inside. Trucks offer HUGE cabs (larger than a lot of SUVs), with the convenience of a huge bed for throwing toys or moving things, a hitch to tow incredible amounts 10,000lbs+ and 4wheel drive that can take you anywhere. There is a lot to love about modern trucks. Even the gas mileage isn't much different than SUVs (mid-20s mpg).
Yeah, we ended up buying a truck within 6 months of moving out here. Our family was shocked because "they never saw me as a pickup truck driver". Every time I told someone back home that I bought a truck it was always pure shock as they reconciled the stereotype of a pickup owner with what they knew about me.
When my parents visited they were absolutely fascinated by the endless sea of pickups. When you parked at a restaurant for dinner, the parking lots are almost entirely pickups, with only a handful of cars scattered throughout.
When my mom first drove in my pickup, she was shocked at how nice it was. It offered great views of the road. It has heated, cooled, and massaging seats. Panoramic sunroof. A huge interior. A huge mulimedia touchscreen. And they drive like any modern SUV in comfort. She eventually said "Yeah I see the appeal to pickup trucks now".
Eventually I convinced them to move out here during COVID. They have been really happy with life out here. But now my dad is getting the itch and now he too is shopping for a new pickup. He never considered owning a truck before in his life.
I don't fit that stereotype for a pickup driver. And whenever I meet people through work or whatever that find out I drive a pickup, they are always taken back. Everyone has a certain type of person in mind for a pickup, especially people in the city. But pickup trucks are the best selling vehicles in America. Much of middle America lives and dies by their truck and they are standard purchases for a lot of families.
Edit: Ok so I'm seeing from a lot of the comments now that everyone is quick to say "You don't NEED a pickup", "You can rent one when you need one", or "I go mountain biking all the time with my Prius/Tesla". So just to be clear. I am not saying that you can't go mountain biking unless you have a truck. I mountain biked for 10 years in a VW Passatt and Toyota Corolla. But the truck offers a lot of convenience and is nice to have. I love having it and thats why I bought it. I'm sure I could jigsaw stuff I am hauling into the back seat. I did exactly that for several decades. But I love tossing stuff in the truck bed and not worrying about it scratching the leather, making a mess, or making it fit. Just toss it in the bed and drive off. Wash the bed out with a hose when you are done. Go anywhere in the truck. Tow anything. It's Comfortable and safe. Try fitting a kayak and/or paddleboard in your car. Yes, again you can buy racks to put it on the roof, and I used to own those. They are a royal pain. Now rent a pickup and throw it in the bed and drive off. You'll be at the lake before the Prius has finished safely attaching their kayak to their roof. I enjoy it and that's why I bought it.