I'm going to quit on the spot
Wait, why do you want to quit so badly? Do you really want to quit on the spot?
Yes, I'm very susceptible to change, I'm also very aware of the down-sides
Although your ready to leave a job, it is expected that you will provide a two weeks notice. Leaving a job on bad terms will affect your ability to use them as a reference.
It's fine, I have job offers already.
Yes, but you need to give the two-weeks notice, not for you but for your past employee. If the job offerors find out that you just quit on the spot then they may rescind their offer out of fear that you'll do the same to them.