Yeah! I love that Portal is essentially pacifist as well! As dark as some of the humor may be, compare it to it's sister-series Half-Life and it's like night and day that way, there is never any true violence going on in the Portal games so far.
Not that i didn't like Half-Life too lol I did, just a lot of violence, and it totally contrasts with Portal in a way that I love.
Portal and LIMBO are the two games i've used to get all my non-gamer friends a little bit more into appreciating videogames, both as a valid form of art/entertainment and as just plain fun!
Whenever I hear someone saying videogames are overly violent and sexist and say they're bad because of that, it does frustrate me, it really is just ignorance. I always try to explain it this way: Some games are violent and sexist, much of music and movies are violent and sexist and you still respect them as forms of art and entertainment. Yes I could play GTA or CoD, but I could also choose to play (or happen to play) Journey or Portal. It can be just as diverse as any other art/entertainment medium. It would be like me choosing to (or happening to) watch Scarface or Saw 7, and saying "omg wow this is just violent trash"... when I could have just as easily chosen to watch (or happened to watch) 12 Angry Men ('57) or Disney's Mulan lol.