By "risk", I meant all sorts of judgment that will be passed on you if you choose to be in porn. It is not exactly the most regular activity (at least not in America) and people WILL get outraged when they learn that's what you make for a living. It seems like fun, surely, but it's too much stress people being weirded out at you should they find out about that side of your life. 
Would you think I'd be majoring Physics at college if porn was simply a normal everyday job? 

 j/k, I actually like what I do, but having porn as a "side job" wouldn't kill. That's what I'm talking about.