It's the 'cups' measurements that put me off trying a lot of US recipes... I am an unreconstructed 'Imperial measurement' sort of a woman - I can DO metric when forced (we are supposed only to buy and measure in metric in the UK - but butchers, greengrocers etc 'display' their goods in metric,but will sell in Imperial for people like me) 8)
Modern UK recipes are all metric - so I'm using that system of measurement more and more nowadays. But family recipes (going back nearly 300 years in some cases!) all use imperial - so I haven't bothered to 'update' them into metric.