*sigh* Looks like I have to clarify things for you again. Let me repeat this to you and hopefully you'll actually listen this time.
The Block button was designed for one use, and one use only: to keep people from harassing others. If someone is constantly spamming you with hate-mail, threatening to kill you, or just plain questioning your sexuality (as is so common around the internet), and they just won't stop, that is when you block them. It was NOT intended to be used as a way to keep a dissenting opinion out of your account. What you're doing is sending a message that I'm only entitled to your opinion and not my own, and you won't give me any chance to correct myself or make any apologies. Even when I give well-constructed arguments, you just insult me, say that I've been insulting you, and keep me from voicing my opinion further on the matter. Back at school, the school operated on a one-strike-you're-out system for those with disabilities. This is an unwelcome throwback.
So please, before you use the block button, think to yourself, "Is he harassing me? Is he going to apologize? Or am I just doing this to stifle other's opinions?"