Many men don't have close friends, and as a result, they may not be enjoying the benefits of true friendship, including having a sense that people care about you. I was recently interviewed by Global TV on this topic. In general, people with a least a few close friends are happier and better adjusted.
If you are someone who doesn't have many friends, it's not too late to change that. Make a real effort to get closer to people you know, by taking an interest in what is happening in their lives. When we care about other people, they are more likely to care about us. When you are going to an activity, don't show up at the last minute -- get there a little early and talk with people about your common interest. Don't underestimate the value of a smile, of being friendly, and of making time to go for a coffee or a walk. It takes time to turn an acquaintance into a friend, but it can be done. Be positive, look for opportunities to get to know people better, and eventually some of your encounters with people will "click" and create the start of something more.