I am in favor of the metric system and use it often. What I see happening during any types of conversion is that we lose something in the conversion. Same price / lower amount, however, you don't see it easily without a calculator. Examples:

We keep our rooms at 20°C, this is 68°F, a little cool for me.

2 dollars per liter, this is $8/ gallon ( rounded)

2 kilos would be sold in place of 5 pounds loosing (600 grams or 1.3 pounds)

Speed Limit 110 km/hr is 68 MPH (rounded)

We should do this and be educated so that we know what we are getting.