Nothing to "believe" about people looking out for themselves; it's fact.
No coincidence that the word cynical is in close proximity to the word cyclical.
Self interest (repel pain) is what makes the world go round for lack of a better term.
Like electrons in a circuit that take the path to least resistance, humans are the elecrrons in society that take the path to least resistance.
Take note a top-down view of a city looks like a motherboard.
Even those who do charity work do it to repel pain they suffer from witnessing others suffer.
Take note how it's selective, some assist humans, some assist animals, some assist rain forests etc.
Now that you have been properly educated, have some Slade.....
https://youtube.com/playlist?list=PLA2K ... _pCcHQrciv
Never liked KISS even though Alan Freeman played them all the time.