My "flesh" or mortal self or whatever religious folks might call that often wishes it did not have to keep going, and for the same kinds of reasons you have mentioned. But then there is also my "soul" or "spirit" or whatever that refuses to be dominated by the flesh...and somewhere in all of that is where I find the freedom of free will to rise above my situations and circumstances while continuing to try to be useful, helpful or at least meaningful in the lives of others.