True but it also has great benefits. One of the best times of my life was all by myself. Being able to what I wanted to do, when I wanted to, gave me a new understand of the world ''freedom''. It also helps to find the real you, make peace with your past, accomplish old dreams, stop being a nice guy, there are a ton of benefits! But like with all things, there must be a balance. I don't think it's healthy to spend an entire life, alone, there must be a balance. I guess it's different for everyone but for me, spending 2 years alone was like those monks in the tibetan mountains, it brought a new meaning to my life and put me back on the right track.