I am blocking some members for various reasons.
I find that reading what some of them post is a waste of my time and if I have the DP given ability to block their "content" from polluting my laptop screen, I am going to use that ability.
It saves me time in finding the good stuff I want to read and eventually participate in discussing the topics I care about.
There are some people here on the DP who are possibly paid to post crap and mislead others who are still learning about freedom, liberty, free markets, etc.. with the intention of pushing away newcomers to this website by creating confusion. If you have the time and "courage" to "debate" them, please go ahead, I am moving on to an other method of using the DP.
Are those reasons enough to satisfy you?
I try to change people every day. Do You?