So, here you are, reading this blog.
Because you are reading this blog I assume you are a living entity. Because reading this blog is an intentional action I assume that it has somehow come to pass that reading this blog fulfills the most and strongest of your current desires, given your beliefs. Even if somebody has a gun to your child’s head threatening to kill her unless you read this blog, it is still the case that reading this blog best fulfills the most and strongest of your current desires, given your beliefs.
I can think of a lot of belief-desire sets that might bring somebody to this blog.
Maybe you were a strong theist now doubting your religion wondering if your life can have value if you are not the manufactured plaything of an omnipotent super-being. (Hint: The answer is 'yes'.)
Maybe you are thinking, "Hey, here is somebody who seems to have actually figured out a lot of the truth about value," and it is important to you to know the truth about value.
Maybe you are entertained by the project of discovering and categorizing the mistakes made by people who claim to have discovered the truth about value.
Whatever path you took, your beliefs and desires have brought you to the state in which you are reading this blog.
With respect to those beliefs we can ask the question, "Are those beliefs true?" If those beliefs are false then there is a chance that you are not fulfilling the most and strongest of your desires as you could be. False beliefs will cause you to think that you are successful in fulfilling some of your dsirs when, in fact, you are failing to do so. They will lead you to means that have harmful unforeseen side effects, or lead you away from means that are actually successful.
It would tend to be useful for you to review your beliefs for accuracy and, where they are not accurate, to replace false beliefs with true beliefs.
With respect to those desires we can ask the question, "Are they good?" By this, I mean, "Are they desires that people have reasons for action to promote in themselves and others, or desires that people have reason to inhibit in themselves and others? Or are they among the set of desires that people generally have no particular reason to either promote or inhibit – the desires that define the category of non-obligatory permissions."
Of course, another question you can ask is, "Does it matter?"
Things do matter in the real world.
You don’t believe me? Here, let me apply these electrodes to your genitals and turn up the current, or take this razor strap to the soles of your feet, or skin you alive in a bath of salt water, and you can tell me, "It doesn't matter."
Besides, if it were true that nothing matters, then it would also be true that the fact that nothing matters is not important. It is an absurdity to lament and bemoan the fact that "nothing matters" as if the fact that nothing matters is something that really matters. The person wallowing in the misery over the idea that nothing matters is a simple mass of contradictions. If nothing matters then there is nothing worth lamenting. If you are lamenting the idea that nothing matters then something must obviously matter, and you can quit your lamenting.
Now that we have established that things matter in the real world we can then ask, "What is true about how and what things matter? Which things matter more? Which things matter less?"
We can ask these questions of desires.
So, here you sit, reading this blog. You are a living entity for whom things matter. And we can ask the further question of whether your concerns (what matters to you) are concerns that people generally have reason to promote or to inhibit. In other words, it is not only the case that some things matter – and some things matter more than others. It is also useful to ask and answer the question of what should matter to people – whether 'X matters' is something to be encouraged or discouragd.
We can ask and answer the question of whether "X matters (to me)" is a good thing or a bad thing. The subjectivist is wrong when the subjectivist suggests that, "X matters (to me)" is all there is to value.
Does your life matter?
Well, it could matter. It could be a very important and valuable life. To a large degree, that's up to you.
Do you want it to be the case that your life matters? If you do, then there are things you can do to help to realize such a state.