It's kind of funny. Being an American, I always grew up with measurements like cups when it came to cooking, nowadays I'm much more preferring gram measurements for everything.
Discussion
more funny you may find it also happens backwards with several metric system bwois
It's funny though because when it comes to taking measurements, my old construction habits are still ingrained into me, so I don't use centimeters for taking measurements.
Stick with grams for food. Cup size is outside of culinary realm really