Of course you should. With the exception of sociopaths or people raised by wolves, it should be second nature to be nice/respectful to others. I say hi and "th

Of course you should. With the exception of sociopaths or people raised by wolves, it should be second nature to be nice/respectful to others. I say hi and "thank you" to the fellow who empties my trash can at work every night because he's another human being, not because I think he can advance my career somehow. I think the speaker in the video is just reminding us that being nice has concrete benefits sometimes.