You're fine with both sets of units because you are a clever person who also grew up using the daft things. I have vague memories of the stupid units as a child and I'm nearly 40, anything Imperial instantly confuses me just because I never had to grow up using it, and have had mercifully little contact with it since, most people 45ish and below are the same. Stuff should have to be sold in sensible metric measures and just as they always have been able to, people can also put whatever daft archaic measurement alongside it they wish. Pints and miles excluded obviously.
You're fine with both sets of units because you are a clever person who also grew up using the daft things. I have vague memories of the stupid units as a child and I'm nearly 40, anything Imperial instantly confuses me just because I never had to grow up using it, and have had mercifully little contact with it since, most people 45ish and below are the same. Stuff should have to be sold in sensible metric measures and just as they always have been able to, people can also put whatever daft archaic measurement alongside it they wish. Pints and miles excluded obviously.