Here is a summary:

My belief is known as “Scientism” (as well as “Materialism” and “Naturalism”) which state that life has no meaning and has no good or bad meaning and that everything in life is “neutral” (neither good or bad) and is just a bunch of meaningless atoms and particles. However, this only applies to all things in life besides our own pleasure, pain, and despair as I’m going to explain here (which are the only good and bad things in of themselves independent of all other neutral things in life). They are even independent of neutral ideas (thoughts) such as ideas others might state such as that life is not about pleasure and seeking only it for yourself will bring consequences to you and everyone else and will even bring you and others the opposite of pleasure as well as much more suffering than pleasure for yourself and others. So my version of those beliefs quoted above is that everything in this universe besides pleasure, pain, and despair are meaningless (neither good or bad) while pleasure is the only good thing and that pain and despair are the only bad things despite the fact that these things are also the functioning of atoms and particles.

This is because pleasure in of itself always feels good no matter what and no matter what meaning you attribute to your pleasure while pain and despair will always feel bad in of themselves no matter what and no matter what meaning you attribute to your pain and despair. Some people might claim that pain feels good to them, but they would be lying. It is only the pleasure itself that is obtained from the pain that feels good to him/her while the pain stands alone by itself as feeling bad. Same thing applies if you were to somehow feel that your pleasure feels bad to you in that it would only be the pain and/or possibly despair that you obtained from your pleasure that would feel bad in of itself while the pleasure would still feel good in of itself. Pleasure, pain, and despair can also never feel like neutral (neither good or bad) sensations such as touch, smell, etc. So they stand alone as the only good and bad things themselves in life separate from everything else and separate from the atoms and particles of other things in life that cannot define our pleasure as being neutral or bad or our pain and despair as being neutral or good. Therefore, good is pleasure, bad is pain and despair, and neutral (neither good or bad) is everything else in life besides our own pleasure, pain, and despair. But if you are going to say something such as that just because these feelings feel good and bad still means that they are just a bunch of meaningless atoms and particles, this would be false because there is no separation between these feelings feeling good and bad and them being a bunch of atoms and particles. Good and bad are the functioning of those atoms and particles that yield pleasure and suffering just like how the atoms and particles yield other materials and chemicals. Also, what I mean by pleasure is all good feelings including love. I do not mean only a limited spectrum of good feelings when referring to pleasure.