As a blogger, I like comments. They give you immediate feedback. Things you've missed, or overlooked, or an indication that you didn't explain yourself correctly.
However, you shouldn't write expecting people to comment. Sometimes they do, sometimes they don't.
As well, I strongly recommend deleting "bad" or impolite comments. People like to push the edges of acceptable behaviour. Being ruthless with moderation keeps the comments in line and stops your comment threads from degenerating into stupidity.
On the other hand, in my mind the best argument against comments is spam. You'll get a ton of spam, and it is a hassle to deal with. There's things you can do to mitigate this, though every anti-spam action will probably cut down on legitimate comments too. Best thing in my mind is probably close comments on posts older than a month or so.
However, you shouldn't write expecting people to comment. Sometimes they do, sometimes they don't.
As well, I strongly recommend deleting "bad" or impolite comments. People like to push the edges of acceptable behaviour. Being ruthless with moderation keeps the comments in line and stops your comment threads from degenerating into stupidity.
On the other hand, in my mind the best argument against comments is spam. You'll get a ton of spam, and it is a hassle to deal with. There's things you can do to mitigate this, though every anti-spam action will probably cut down on legitimate comments too. Best thing in my mind is probably close comments on posts older than a month or so.