I understand, I was kind of self employed many years ago (when I was doing my masters and a certain time later), but it's a bit inconvenient for me: not a stable income, no job "security" as you said and no some additional benefits (as for example I took mortgage in another branch of the place where I work,but it was a very good mortgage offer for employees only etc). Also it depends very much on your private life I think. I couldn't afford to be self employed when I was alone, now the situation is opposite (but still prefer to have some money independence at this moment)