The way I see it, it is the opposite of unselfishness (unsalefishness being a virtue in our culture) and is therefore a vice.
Since both virtue or vice are encountered only in man-made cultures or societies (the artificial man-made world we call civilization), both have no meaning in the natural world, imo.
What does the word "good" mean to you? For that matter, what does the word "evil" mean to you?
Without looking up a dictionary definition, I would say that to mnean it means something which is implicitly or explicitly beneficial. Evil, on the other hand, is that which is implicitly or explicitly injurious.
But what is the decisive criterion to distinguish one from the other? I.e., good from evil? How can anything be rationally judged "explicitly beneficial" [for whom???] or otherwise, without such a criterion by which to judge?
You remind me of a denizen of Laputa — the "flying island" of Jonathan Swift's magnificent satire, Gulliver's Travels. The strange power of this flying island of Laputa was that its denizens never had to put "their feet down on the ground" of Reality as it was experienced by humans everywhere else, with all existential reality's problems and complications. I won't go into all the details here. Suffice it to say that the only "sciences" understood or credited on Laputa were mathematics (in highly bastardized and reduced form), and music. And music is only included on the list of Laputan worthies because of its likeness to mathematics. Though the Laputan scholars are not entirely sure how or why that is....
In other words, Swift the satirist is poking fun at human beings here. Including, I do believe, you, dear kosta! Perhaps especially you — or whatever "type" of thinking you represent.
Prayers continue....