The polar opposite of a socialite.
Not to be confused with an antisocial, antisocialites do not shun socializing, but rather avoid using it as a lifestyle (as socialites do).
Also not to be confused with a nonconformist, who purposely does the opposite of anything they deem to be "in" at a given time.
If you just have to get that new Louis Vuitton handbag with built in poodle carrier, you're a socialite.
If you hate the world and everything in it, and are too lazy to do more than bitch about it, you are a nonconformist.
If you just don't give a fuck, you're an antisocialite.