Are we lonely?

What is lonely when said and done?
we are born into to bodies one by one
our souls take shape as time goes by
we crawl and walk and want to fly

we meet more souls on our path
we seek joy and want to laugh
our identity and uniqueness
actually perhaps our weakness

We are all of one flesh and bone
and dust to dust when we are gone
How does loneliness appear?
Is it because we hold life so dear?