Is being alone that bad after all?

Lately I have been getting tried of all the crap people seem to protrude out of their mouths. I miss the days when life was simpler, where the only person I had to care about was myself and my few close friends. I give as much as I can to the people around me and it seems every time I do I get spat on. What's the point of having all these friends in your life if that is the end result? The thing that keeps me going on is knowing that even in the smallest way my kindness could help them to keep going on. Once a long time ago someone I knew committed suicide, this person really liked me and I could never understand why. When I began to finally see some of what this person saw, this person was fighting a personal battle that led to their untimely demise. I felt guilty because if I could have just gotten out of myself for two seconds, and become friends with him like I wanted and felt like I should have, maybe he would be here today. After that day I made a promise to always be there for anyone who comes into my life, even if it is only for a second. The answer to the title of this post is no, its not that bad to be alone. The problem with keeping to yourself and not making as many new friends as you can is "what if you could have been the person to save their life?"