Look, they're just trying to be polite. It isn't their fault that you don't meet their needs. I know you're disappointed, but that's life; don't take it out on them, just move on to the next application.

Being a snippy asshole to them could result in your never getting an offer from them, or recruiters who work with them, again. Not highly likely but not impossible. It's also an extremely bad habit to get into if you want to retain jobs after landing them.

If you really need to vent, write the note +in an editor or on paper, not as email) to get it out of your system, then throw it away. But that's still really not the behavior expected from a supposedly mature, employable adult.

Look, they're just trying to be polite. It isn't their fault that you don't meet their needs. I know you're disappointed, but that's life; don't take it out on them, just move on to the next application.

Being a snippy asshole to them could result in your never getting an offer from them, or recruiters who work with them, again. Not highly likely but not impossible. It's also an extremely bad habit to get into if you want to retain jobs after landing them.

You really need to get over yourself. This isn't a rejection, it's simply not an acceptance. MOST applications are declined; expect to apply and interview multiple, sometimes many, places before landing a job. Take it in stride and apply elsewhere.

Taking affront harms nobody but yourself. FIX THIS ATTITUDE for your own sake; if you go into interviews with a chip on your shoulder you will be radiating "don't hire me, I'm more trouble than I'm worth." I mean, come on, are you going to blow up this way the first time you don't get your own way at work?