I haven't got LF...yet!
BUT...I have 30-odd 35mm cameras and one MF...I rarely use 35mm nowadays unless I'm shooting fast action stuff where autofocus and fast shutter are handy, or when I need something compact because I'm not on a photo trip but don't want to be without a camera.
Also occaisionally just because a Contflex or a Bessamatic can be fun to shoot with...
So...motorsports and action, 35mm. Everything else MF.
LF when I get my hands on one!!!