By this I mean do you have a really strong interest or passion in one particular thing? (For example, mine is music) And does the area of interest sometimes change after a long while (i.e. a few years)?

In other words, are you an 'all or nothing guy', where you have to know more-or-less everything about something that actually interests you - and if you don't, you feel unfulfilled.

And do you think this 'weird' or 'abnormal behaviour'?