I think you are reading the wrong things into my words, and there is no need to be offended. My statement contained 2 different parts:
1) I depend on my brain and the ability to look at computer screens for my job.
2) Being a white middle class male in a 'safe' job in a 'safe' neighborhood DID have a point in the conversation. I replied to a poster regarding the added value of full contact for self defense. Because of who I am, where I live and what I do, the statistics for my demographic make it unlikely that I will ever be in a situation where the added value of full contact sparring will make be significant.
Ergo, the risk of concussion is much higher than the risk of not doing full contact, and since the consequences of a concussion can be very bad for me because of what I do for a living, I forego full contact but the self defense value of what I do is still much better than doing nothing.
If I was a colored factory worker living in schaerbeek (bad place near brussels) then the consequences of a concussion would not be as serious, and the likelihood of needing the added self defense value imparted by full contact sparring would mean that the numbers work out in favor of doing so.
I really did not mean to offend, but my demographic was important to the point I was making, and I am not the one responsible for the differences between demographics and the likelihood of ending up in violent situations. And if you think I am a racist, then you are really way off.