If you don't think that evolution describes the changes in the population of mitochondria in a cell, then I think you're taking an overly narrow view of evolution!

That may well be so, but still in the context of this discussion I don't think that it's useful to describe the changes in the population of mitochondria in an evolutionary framework (your lower level, that is).

happen to be male; none of my mitochondria will make it to the next human generation anyway.

Unless you have a sister :-) Yes, I know that mDNA is special.

The answer is twofold:

There is also the third option: symbiosis. If you managed to get your hooks into a nice and juicy host, it might be wise to set up house instead of doing the slash-and-burn.

Since this started connected to economics, there are probably parallels with roving bandits and stationary bandits.