Sure but the tradeoff is that either you accidentally order more things than you need (based on retailer recommendation), or you have to do a new order because

Sure but the tradeoff is that either you accidentally order more things than you need (based on retailer recommendation), or you have to do a new order because you forgot (when there are no retailer recommendations). Some retailers allow you to modify an existing order, which can partially solve the problem as well. Overall, I think its not a good idea for a retailer to be so pushy at checkout especially when I want to checkout quickly and get back to doing whatever I was doing.