1. enjoyment
2. keeps you awake
3. more reliable
4. more control in stuck or slippery conditions
5. thieves don't know how to drive them
6. the kids are terrified of it and won't ask to borrow it
7. can push start the car
8. can restart the car while moving if the engine stalls
9. can coast
10. can drop the clutch and get off the line faster when drag racing against some teen at the traffic light
11. get to enjoy double clutching and mastering heel-toeing and pretending you're an F1 driver
12. The Cat cannot reach the clutch pedal, frustrating its plans for putting me in the trunk and depositing me in the Kat Fud Factory
13. you can nurse the car home and to the shop with a broken gearbox. With an automatic, it's a tow truck every time
14. the sheer joy of a winding mountain road, a powerful V8, picking the gear for the next turn, managing the traction and engine speed, etc.
What is the pro of manual transmission? I used to have those cars in the EU and thought it was just an annoying extra thing I have to pay attention to when driving.