Long relationships
Allowed to stay out late
Easy weight loss
Centuries of experience
Immune to all venereal diseases
Always has amazing stamina
Loves neck nibbling
Rarely interested in arguing religion
Never comes home with garlic breath
Don't have to worry about what color of clothes to wear.

Cons:

Spend your time in a hypnotic daze
Parents can be hell
You always feel tired (loss of blood)
Always has cold feet (and blood)
Never able to spend the day in bed
Pet names that give you chills
Strange friends
Giggles at funerals
Hard to win an argument
No romantic sunsets