I know a few of you reading this probably do, as well, and it's your journal, your option, do as you like...but I don't claim to understand it. I'm fine with turning off anonymous comments, sure...there are jackasses out there. but you are cutting yourself off from people you don't know...and all friends start out that way.
It probably wouldn't get to me as much, but I just saw someone on my friends list witha computer problem that was really bothering them (EMM386 stuff), and I typed out a nice long comment that explained what it was, how it worked, and two different links I searched out on how to fix the problem relatively simply...and then got that when I tried to post it.
*shrug* Your choice, it's cool. I'll support your right to do what you choose...but I'll make no bones about how little sense it makes to ME.