Which Character Do You Detest The Most?

I'm not sure who's the most horrible of the lot. They all display immoral behaviour - some even seem to be amoral psychopaths.

At first, Rob Lowe takes a clear lead by being instantly detestable.
Then, once you realise he makes no attempt to hide it you have to question the others for being his friend - NB: 'You are known by the company you keep.'
Your attention is then drawn to Demi Moore who is probably the most self-centered of them all - she clearly cares only about herself and again makes it hard to believe the others are her friends (especially as she sounds like Marge Simpson).
Emilio Estevez enters the fray and quickly displays dangerous stalking behaviour, which suggests he's the one who's the biggest danger to others - and doesn't he tell (Dr) Andie MacDowell he's studying law and later switches to medicine? I know stalking wasn't a thing in 1985, but I'm fairly sure turning up uninvited to someone's private love shack, when they're there with someone else, was still disturbing behaviour.
As for Andie MacDowell - she doesn't even bat an eyelid throughout his demented actions and encourages him and teases him like he's a joke. Is she a psycho too?
Judd Nelson seems like the rock of the group, only to then reveal his unashamed promiscuity and sexual exploits that only normally occur in the plots of porn movies. All while trying to get Ally Sheedy to marry him out of some illogical belief that being stuck with one woman forever will make him want other women less. Promiscuity is a trait of psycopathy too.
As soon as Sheedy and Nelson break up, that very night we see his 'friend' Andrew McCarthy swoop in like a vulture to move in on her - his 'true love' for her clearly being more important than any thoughts that basically date-raping the drunk and vulnerable girl might be wrong.
But, hey, it's ok! Turns out that Sheedy just used McCarthy for revenge sex on Nelson and then makes them both her puppets.
Even Mare Winningham, the timid, plain Jane behaves in ways that makes it clear she overrates herself. She uses and leads on some Jewish lad just to get a car from daddy, all whilst lusting after married (with baby) scumbag Rob Lowe, who's admittedly ridiculously handsome, but offers nothing else (no one likes saxophone). Even when she loses Lowe she shows zero emotion.
The characters (yeah, I don't know their names) are all psychos! The writers expected people to care about these people in 1985?
...Anyway, I'm actually going with Ally Sheedy as being my most detested character - she actually makes an effort to use and hurt people, whilst hiding her true horrible nature throughout the film till that point.
...My outrage is 30 years late. Maybe I need a lie down. 
4/10 (the acting & music was ok).