As long as all participants are consenting adult characters, my view of it is largely positive. I wouldn't hang it up for display, but adult furry art can be sexy and fun. Whether I like a particular piece depends on a number of factors, but this sort of thing is probably the most harmless kind of "porn" I can think of. It's imaginary, and I put porn in quotes because I'd argue that the better works have redeeming artistic value. Something that real porn utterly lacks, in my opinion. For what it's worth, I have a negative view of actual porn with live actors. Adult furry art just doesn't have the same negative associations in my mind of sex trade abuse and exploitation that real porn does.
That being said, art can be a propaganda tool that influences peoples' attitudes and whatnot, so I dislike furry porn that depicts abusive situations. I also dislike Rule 34 porn of trademarked characters. Sorry, but I'd rather not see Krystal and Sonic getting it on... just no.