I like the negatives from 120, the size, the number I get, the cost of the roll, the way I can process, store and enlarge it. Plus the many camera and lenses available that take it, their portability and the wide variety of film available at a manageable cost.
I looked into LF but I'd need a new camera, lenses, enlarger, developing equipment and even then I still wouldn't end up with a bigger photograph since my easel and trays and means to handle the paper would also need to increase.
For me 120 is absolutely the sweetest of sweet spots, I never looked at a 120 negative and wished it was bigger/had more detail.
I can see there is a huge appeal to LF but it's a /maybe I'd try it if they still have such a thing as retirement when I'm 70/ thing for me.
The only real gotcha with MF is the relative and really quite surprising lack of options for movements, that'd be nice, I live with cropping in their absence.