Is it normal to be so numb towards others?

I don't have many feelings towards other people. I don't feel affection, gratitude, admiration, respect, sympathy or love. I'll think "That's a good person," or "That guy is respectable," but those are just thoughts, aren't they? Or are what most people call emotions really just thoughts that seem logical to attribute to someone? I sometimes enjoy another person's company, but it's similar to the way one might enjoy chocolate; it's stimlating somehow and helps stop boredom. I don't feel protective of that person or empathetic towards them, though I might act like I do for some reason. This has caused me to think that maybe no one really feels compassion or guilt or gratitude or anything like that. Maybe these things that are often called feelings are really just instinctive actions instilled in us by evolution to help us survive. I could be wrong, and I hope I am. I don't want to be like this. I want to get out of myself more and focus unselfishly on others, then maybe I can experience relationships the way other people describe them.