Are we not all in the same boat? I never blocked anyone in Disqus, when I see people's names I know what they are going to post so I skip them. Experience has taught me to distinguish between those who are genuinely interested in discussion and those who are only interested in scoring cheap posts, i.e trolls.
The vast majority of contentious posts come from progressives who mistakenly think they have the Pope on their side and come over with the 'we are the masters now' attitude.
I rarely read more than one or two lines of what you post because I know where you are coming from but I would never block you in case one day you posted something I could engage with.
As I said the only casualty is yourself. People who might wish to reply to you can do so through a third party and you will have forfeited the the right of reply. The forum will just go on without you if you don't care to fully participate. In the end it is up to you, remain in your comfort zone if that is your desire.