In the end it's the result that counts. This can be achieved in a lot of ways.
And the same discussion with brands & clothes:
If someone is wearing unbranded clothes, does this make he/she/it a human less worth??
Of course: no money, no brand clothes. But, you can't pinpoint "no apple"/"no brands" to "no money". For me, I could afford buying a new apple device every month. I just decided for my self, not to let wallgarden me :)
And jeez, don't diss the opposite sex over their computer taste.
Personally I feel smugly superior when I go to a hack-a-thon with a cheap tablet, bluetooth mouse and keyboard and RDP into a cloud server. My client makes any Macbook look clunky and oversized yet behind it could be a cloud server with more RAM than all of those Macbooks put together.
Anyhow you must have a huge surplus of pretty girls in your life if you are going to not chat one up based on the computer they have.
I don't look down on Mac users, but I recognize them as having preferences that don't match mine.
Except for the WebTV users. Sorry y'all its not worth it get a real computer.
PS: Just a suggestion, your observation is a real phenomenon, personal values self-review is strongly encouraged. Too much utilitarianism and opportunism will invariably lead to some kind of psychopath world-view.