I would get help but it would be more harmful than helpful to OTHERS?

With 'on and off' depression, I don't understand why you want to see a therapist in the first place. You said it yourself that nothing is wrong with you now. You see, everybody has depression at times, and so do you, but that doesn't mean you need to run to a therapist or a doctor because that depression goes away on its own. It's when you've been depressed for several weeks, non-stop, and it's affecting your life in general that you should seek professional help. You don't fit in that category.