Should someone try to be normal?

Only insofar as to be sufficiently compatible with society so as to be able to function. Function being defined as being able to work, pay taxes, and live independently.

If that means wearing a suit and tie at work, do that.

In your personal time though, do what you like--it's your personal time. If your definition of a good time is painting pentagrams in red crayon and summoning the flying spaghetti monster to consume the world with his noodly appendages while wearing a strainer on your head, then go ahead and do that.