You know, I get the old saying that ignorance is bliss. Honestly, there are more than a few things that I've learned over the years that I'd be happy to forget if I ever could.
But that said, I always like to err on the side of having more knowledge, not less. Even if ignorance is bliss, what you don't know could definitely hurt you. So hey, why not cram a little more into your head? You never know when it might come in handy.