I've been there many times, in different StackExchange websites. Got many of my questions deleted. Got few of my answers heavily down-voted. It's very frustrating indeed. But I've never been on the other side: being a mod. So I can only assume...
To me, the moderators are doing a very heavy job, most of the time. All of the ones I've crossed by are highly skeptical and knowledgeable people. Almost always they know much more than I do on the site's subject. That's how they got so interested on the subject to dedicate so much time of their life writing and reading about it.
That being said, not all mods are the same, but most of them like to keep things clean. Thus, deleting. Simply put, it was deleted because he thought it was actually a bad answer for the site. He said it so in his own words.
I disagree with his position, but I understand where he comes from. Your answer is indeed and already proven, even today, not well accepted by the community. Almost nobody with a Mac OSX will want to install any other OS. It makes very little sense to do so.
If I were to be a mod I think I'd never delete anyone's post, unless it's plain spam. Ever. You see, I don't mind if things aren't perfectly clean. I love [kbd]CMD[/kbd]+F, gmail and google for the same reasons. That's what makes it even more frustrating when someone does it. It seems to be very inconsiderate.
But, truth is, stuffe wasn't ignoring you at all. I'd say probably no moderator delete any post without some consideration.
In the end, I think this is all just 2 very different worlds colliding and, if you want to "be accepted" in any of the SEN sites, you have to forego many of your pre-conceived concepts. First, about other people hurting you. Nobody here is trying to get that personal. Then, about feelings, emotions and even opinions. Not really welcomed here. As I see it, SEN is about consensus and focus.
I find it unfortunate in some cases, but well, nothing is perfect. Quora is a good counter example in which you can ask much broader questions and, thus, get much less specific answers.
In any case, wish you the best dude. I'm thankful your answer got undeleted already.