The bliss of ignorance

I sometimes wonder, would I be happier if I knew less? For example, if I had not found out about Japanese, and had had no choice but to push through for a computer science major, would I be happier now? If I hadn't met her would I be happier here because I wouldn't be torn between something safe and something I want? If that friend hadn't told me about that show, would I be better off now than I am?