My rough collie loves to be brushed. If we are playing and I pick up her brush she knows exactly how it feels and though she will wag her tail and shake her head she enjoys every minute of it. I like to think she feels the way I do when someone does something nice for me and there is a pleasant feeling that flows through my body, probably from a series of chemicals released into my muscles. Much the same as having someone massage your head.
I know people are supposed to feel the same who are massaged so I think that it is obviously a lovely thing for human beings to stroke animals and each other but why? Are these things, which may be broadly considered, acts of peacefulness, made to make us feel good so we aspire to peace? When someone does something for us without regard to anything but how we feel, are we supposed to be enthused with such gentleness and delight that we seek out these feelings more often?
I actually wonder if this is the reason some people love Christianity because the ‘feel good’ factor can be so high knowing a divinity loves you.