The way I see it, you're not going to get much out of life if you don't allow yourself to be vulnerable. It's one of those things that makes us human. I think it's one of the reasons you "emotionless robots" are not genuinely happy with your lives. You're just trying to be something you're not. If you want to be happy, then stop denying your humanity. Everybody feels pain. The only difference is, some allow the pain to help them grow and be better at dealing with it, while others run away from it and ultimately get nowhere. Pain is not a bad thing. It is not something we're not suppose to feel. Love is not suppose to hurt? Bull shit. Love can and will hurt, always. The only way you can deal with that is to not let it bring you down. Face the pain. Stand up to it. You are better than the pain. Be strong. Yeah, it's hard at first, but it gets easier the more you experience it.