>> Once you include my feelings as a source or metric of value, you end up on a very slippery slope.

What about the trolley problem? If subjectivity has no place in moral philosophy, why even ask the trolley question? If we're throwing feelings out the window and measuring by objective value, then we're valuing human life by how many people are alive. In that case, if 3 people died instead of 1, which creates 2 excess deaths in a "value pool" of 8 billion people, that's a .00000000025% loss of value. That is so negligible that it renders the trolley problem silly and not worth thinking about.

Even if you upped the stakes and put 4 billion people on a trolley track, it still wouldn't mean much from a purely objective standpoint. We've done just fine in the past with far less people than that, and it's not even close to the brink of extinction, so objectively, the trolley problem doesn't matter, and neither does death in general.

The reason that death and the trolley problem are important is because of the subjective feelings of the loved ones left behind by the people who got run over. They're not your loved ones, but the problem expects you to empathetically consider the people who would be affected emotionally.

Similarly, if a street cleaner were to find your finger painting, they would have a moral obligation to use empathy, recognize that a kid's finger painting may hold sentimental value to someone, and do what they can to return the finger painting to that someone. If they are incapable of returning it, that's that, they did what they could. But it would be immoral to throw it out immediately with no second thought.