But with the newer stuff, their abilities are amped and their weaknesses are nerfed. Why not?
Exactly. You get eternal youth (at whatever age you "died") and all kinds of extras in exchange for a literal blood thirst. Which may or may not require you to kill a person (depending upon the writer) or animal.
So what effect would that have on society? And when did it start?
Are there "good" vampires and if so, why aren't they converting some of our best scientists? Why aren't they our space program? Stake them on Earth, send them to Mars and have a machine pull the stake. No need for food during the trip. Be the first vampire to see Saturn up close and then turn the ship back to Earth. How many astronauts on Earth would willingly "go vampiric" to do that?