Kustom,  I can understand why it would be upsetting.     I think there is so much anxiety about feedback and there have been so many posts lately about how to have bad feedback removed.  Its too bad that sellers have to be at the mercy of buyers when it comes to feedback.

I too have to go through a bit of trouble to get things posted especially since i dont drive.  But if someone orders from me on a thursday afternoon I put my daughter in her pram and off we go to post and for a 20 min walk.   I justify it ( for me ) by saying basically a new business doesnt make money in the first year.  Hopefully one day ill sell a few items a day instead of a week and 'll pick two post days that are more convenient for me.    

Its true its not the buyers problem.   It may be another instance where ebay works better for larger scale businesses,  especially if you want to  work on a time=money frame of thought.  If you want to remain a small seller  it may be a reality that selling on ebay is not worth your time.     If you want to grow your business,  its a sacrifice you make in the beginning i guess.    Thats how i see it anyway.