USian here. I flip flop between the two systems depending on what I am doing. At work we use metric for temperatures and dimensional measurements except for when we measure dimensions in inches (different drawings from different engineers). In cooking, if I’m using a recipe, I use what the recipe uses. If no recipe, I cook by intuition, lol. Home carpentry or machining projects always metric. Modeling for my 3D printer, always metric. Buying weed has somehow always been both. Driving is miles, weather temps are fahrenheit.