Hello!
You are failing to recognize that subjective values are values, though. Just because something is subjective does not make it fickle or meaningless.
Actually, that was the part that I left unspoken in my initial post. I claimed that I am an atheist/nihilist and then explained why you can't live the "true doctrine", so to speak.
Just by existing, we make decisions, and since those need to be based on values, we will by our very nature adopt subjective values.
However, as the subjective values of atheists are not related to any objective values, the subjective values of different atheists can vary greatly. There is no guiding principle for atheists to tell them which subjective values to adopt.
I can't agree with your final statement about meaninglessness, though. If there is no objective meaning to anything, there is no way to create such objective meaning. You may create "subjective meaning", but that exists only as long as the creating subject and those who support it exist. And as we are all mortal and in comparison to the world short-lived, anything based on our subjective, individual existence is fickle within the greater picture of the world.
Yours,
Deathworks
P.S.:
Boy, being Deathworks must be depressing as hell.
Actually not, as a) normal life by necessity uses the adopted, subjetive values and b) meaninglessness is not depressing once you have accepted there is no objective meaning to begin with.