The good news: you'll be able to say, with authority, when someone is totally misinterpreting how karma works. Yeah, the jerk that cut you off in rush hour traffic probably isn't going to trip and fall into a vat of acid. 

The bad news: median starting salaries for religious studies majors are under $40,000 per year. And the job market is contracting (source).

You may have to seriously supplement your income if you choose to become a religious studies major...unless Daddy wants to continue paying your rent. Namaste.