I follow a lot of insanely talented artists here on DA, people whose work I look at in sheer awe and whose skill I can only dream of one day matching.
Unsurprisingly, that high quality of work leads to them either having their work ripped off or operating in fear of that happening. They, quite rightly, want to protect their art with a watermark, something which I'm not against at all.
What I am against, what I hate, is people using that god-awful DA watermark.
If you are a good artist: don't be a lazy git. Make your own watermark, use your own logo. You'll protect your work without doing it the disservice of having some automatically-generated arse-smear ruining it.