What prices I have seen reported for Apple's OS X upgrades list it as cheaper than the comparable upgrades for Windows 7. I do not believe you can buy OS X stand-alone, I could be wrong.
Apple hardware may not be suited for games, but it is more suited for other applications (e.g. graphic design). You pick the tool for the job based on evidence, not ideology.
Actually, any modern windowing system is about as easy to use as another other one. Familiarity, of course, will make one *appear* easier than another to any given individual. I use Windows (XP, 7, and Server), Ubuntu and OS X; they're all pretty much the same although the do have their individual strengths.
If old hardware works, then it works. Why should it be retired if it can still fulfil its function? If it works, or can be re-purposed, then use it. I certainly can't afford a new PC every couple of years and I am gainfully employed! I suspect you are not working and have your needs met by Mummy and Daddy, your attitude will change when you have to provide for yourself.
I am pleased to hear that your mother got such a good system, does she play games? Or did you spec it for her? For day-to-day use you can get a perfectly good system for about half the price you quote (less if you opt to re-use hardware or a different form-factor).
MS is a dead-duck in the Smart-whatever market. That it ruled by Symbian, iOS, and a legion of Linux distros. So if the world does shift from the desktop to that kind of arena, then we could see the landscape change. Which would be good. Competition is good. Struggle is good. For too many years IT has been stagnating in a monoculture. It needs to diversify, if only to save itself.
"one last thing if you cant understand me then stfu i dont give a beep"
Well, you should. ifyouexPressyOurop1n1oninaw-ayth-at1shardtounder5t4nd then people will struggle to follow your opinion. Any valid points you may make will be ignored and simply add to the noise.