instead of simply typing ****!
Because, for some strange reason, you think that if the software censor is not actually invoked, then you're not breaking the forum's language rules. Or, maybe, because you are intentionally violating those rules, and wish to thwart the software censor's attempts to obscure it.Why we use [deleted for content] ...
It's not always considered acceptable. It's both profane and vague, so it could cause communication problems in at least a couple of ways.