Frank,
Welcome to KTC. Fellow 26 y/o former ninja dipper. These other guys have already made some good points so I won't waste too much of your time being an echo, but a couple things:
You've done well listing the reasons you want to quit. As time goes on sometimes we can forget and I think you'll find it extremely helpful to have something to look back on the will remind you how you felt in the beginning. However, I would focus more on your disdain for dip and less on what you like about it. It's your job to remember why you want to quit and nicotine will be doing it's damnedest to remind you why you shouldn't; if you're going to be successful in this I wouldn't make it any easier on her.
Addictive personality is a cop out and it's learned. Don't give yourself any reason to fail and "I gave up because I have an addictive personality" is not acceptable. You give any person an addictive substance and they will become an addict. Now is the time for you to reprogram yourself and get back to where you were prior to dip.
Coping can be a struggle for a ninja dipper. There is no one in your life who knows that you're fighting something and no one to relate. In this community we can fill that void. Someone is bound to have gone through the same things as you and will be able to relate so do not be afraid to reach out. Also feel free to use us as a punching bag if any quitting stress starts to bleed into your social life.
Glad you found this place and I'm sure you can be successful in this. Move forward with confidence for what you're going to be and hatred for what you were.