Why does it have to be like this? Kodachrome so hard to shoot

I loaded a roll of Kodachrome in one of the cameras. I took that camera out with me every time I went shooting and in that time I shot over 10 rolls of film and just today forced myself to finish the Kodachrome.

1: I have 4 more rolls so I know I am not worried about using it all up.

2: I shot a roll of Ektachrome in that month and a roll of C-41 so it is not a color thing.

3: I just live down the street from Wal-Mart where I drop it off so it has nothing to do with it.

4: Though slow the weather has been for the most part sunny and in fact not one day I was out was ISO 64 too slow even with a longer lens.

Oh well my warped brain on things I may not need to know the answer too.

Larry