Pissed Beyond Explanation

I doubt I can explain this to ay degree without going through all details... not only would that take forever, but that would also have me betray secrets--both others' and my own. So I'm just going to say this--

There are some people who I thought were really good people, who I trusted, who I now refer to as some of the lowest scumbags of the earth--people who use others for their own benefit, and people who let themselves be used, despite their knowledge of the fact. Ugh--I'm sick of it and I want nothing to do with them anymore. Being around this kind of crap just brings me down further and further.