Why does one feel so lonely during the lifetime, when one born and die all alone

well, technically no one is ever born alone, your mother is there for the whole thing as well, and MOST mothers stick around after and love you.....though it is true some people die alone, but that can be a choice.....you can choose to not be close to anyone who would be around and support you during your end days. You can have friends, family, and loved ones with you during that time if you have created close connections with people..