Indeed you cheat aging, but you'll have to hide the identity at all costs. I doubt people will allow you to live in their society since you're the one who has to drain their life force and shorten their lifespan. And once they find out about you, you'll most likely be killed and that would be a permadeath for you.
To answer your question, I would not like to be a vamp, but if by some event or chance I will become one, I will probably take on some profession like alchemist or scholar that will keep me indoors most of the day and not rise too much suspicion. While trying to "feed" on someone discretely at night.