Paper business cards are annoying for people you give them to because of reasons #5 and #4 - they get lost or tossed, and they are a mental drain on the person who has to carry yours around until that inevitably happens.
But they're also annoying for you!
Countless are the times you've been frustrated by bending up your business card in your pocket then having to toss it because it wasn't in mint condition any longer.
Or times you've had them fall between your car seat, or take up too much space in your wallet, or even worse...
You actually meet someone you NEED to give your card to, and you don't have one on you!
Yes it's true, paper business cards are one of life's great annoyances.