It sounds like for your style of shooting, large format probably doesn't make sense. If you don't feel you need perspective control, focal plane control, or resolution offered, then by all means keep shooting medium format and be happy. Large format ain't for everyone.
A few other things I rather enjoy about large format (in addition to the perspective control, focal plane control, and resolution, which for me are actually a huge deal):
- Single sheet developing. I can custom develop every image. I can go out for 2 hours and come home with a single frame sometimes, and that feels like enough.
- Process. Setting up the camera, taking my time to very precisely compose, focus, and meter the scene, etc. is a very zen-like and relaxing way to photograph for me. It helps me concentrate on the art and take better images. I suppose I could do that process with other cameras, but I don't. With 4x5, I'm forced to slow down.
Those two things are worth considering, but for me personally, they wouldn't on their own be a good enough reason to shoot 4x5. And if I'm honest, I frequently can't be bothered to get out the large format camera. Sometimes I prefer the simplicity of working in medium format instead, and I find that MF gives me enough resolution for the prints I want to make about 95% of the time. In fact this spring I really shot a lot more 35mm than I usually do, and it was a delightful change of pace for me to walk around without even a tripod and just shoot without overthinking everything or wondering whether each exposure was worth the film cost. I even got a frame I really like, and one that works well with the softer "enlarged" look I get printing 11x14 paper from a 35mm negative.
All in all, I'd say you probably shouldn't get a large format camera.
That said, if you ever find yourself in Utah and want to try the whole 4x5 thing out without spending any money, send me a message. I'll be happy to let you shoot mine and find out once and for all whether you get the bug like I did
