Why should life/existence by valued if i can choose to not want to value it?

It's very possible for me to see all there is to life, the good and the bad and yet still not think this is enough for me to stay. Life is nothing but a slip of consciousness and just like that you could say it is amazing but I will say this is to be destroyed. Why? Because it can. Do not tell me it's a matter of what feels good and what doesn't, because then choosing to feel bad by choosing to die becomes something that feels good; so feeling good isn't the pinpoint at hand here.

So since I CAN think like this, how can I not think like this? Do not tell me to just be one with life in experience because this is futile and never has been fulfilling. Do not tell me that if I can choose either I should choose life, because I'm saying to you my choice IS non-existence, this is the dilemma: the choice and the confusion of life.

I am looking for the answer that breaks down this thinking and builds myself a new thought basis.