Couple of thoughts...
I don't think anyone would be actively "against" such a feature, but some of us, me included, aren't specifically seeking it. If it was there, meh, OK... so it is there. There has not been one time since 1987 when I began using a Mac that I have needed that feature. Now, I realize, for some of you, it is a deal-breaking, Windows-giggling feature that defines the OS, but for me, it is inconsequential. Some have said, "how can you not think this is a good idea". Well, because I have never needed it for one. I don't think it is a bad idea, I just don't think about it at all.
The other request... "delete this and only this file from the trash", I am equally indifferent towards.
The bottom line is, I don't use the Trash as storage or a staging ground. I don't do it in the kitchen at home, and I don't do it on my computer. I don't accidently put my groceries in the trash and need to retrieve them. And I don't store my canned goods there on the off chance that I might not want them. When I put something in the trash, it is because I want to get rid of it. I am always amazed when somebody "accidently" deletes the most important documents, pictures, projects, etc. in their life... without a backup no less. Even if they don't empty the trash, why they end up there to begin with is beyond me. Mistakes happen... yes, and I am certainly far from perfect myself, but the regularity of this and the need for a specific feature to encourage it... well, like I said... meh.
On my Mac, if I have any doubts, I make a Temp folder on my desktop and store things there, and when I am sure, THEN I put them in the trash. Once in the trash, I consider them gone. I empty my trash without fear...
Now, having said that... have I ever gone through my trash in my kitchen looking for a receipt or something? Rarely, but yes, it has happened. But it is an extreme exception, and not the rule, and certainly not worth making my trash can a storage bin.
As many have pointed out before in this thread, it is a difference in philosophy. Can it be added? I am sure it can. Should it be added? I don't really care. I don't think it makes OSX any better or worse in comparison to Windows any more than copy/paste in the Finder would.
Woof, Woof - Dawg