You will be when a cop demands your NID card and you don't have it.
Cop: "Show me your NID."
You: "Musta left it home."
Cop: "Then get in the cruiser - you're going downtown to the station until we verify you and fine you $200 for failure to produce NID card on demand."
You: "But I didn't do anything wrong! and I'm supposed to pick up my date for the movie in 20 minute!"
Cop: "TS. Get in the car. You're gonna miss more than the movie. The ID verification office doesn't open until 9AM Monday."
Cop: "Do I have to spell it out for you? You are to be detained at the county jail until we identify you, and that won't happen likely until Monday afternoon."
You: "But today's Friday!"
Cop: "Sucks to be you."
You: "AAAAAAAAAAA!!! Not fair!"
Ben, a NID basically means it's illegal for you to exist without possessing the card. Go see what happens in other countries with such IDs - it isn't pretty. Sure, people "get along OK with them"...but they certainly aren't free.