This is the subject of a draft manifesto / research agenda for me: the neurological features of obligations. I call these loomings. The idea appears in lots of places -- your link is one such -- but if you pull the thread it goes nearly infinitely deep. Reality starts to unravel like a knit sweater.
It seems like one of the most important things in the world that almost nobody talks about.
Both have their advantages and disadvantages at the same time. We can practice both at the same time and from my personal experience I can tell you that it's the best option.