Is it normal i want to kill my flatmates?

I recently posted a story (is it normal not to wash your hands after taking a poo) and feel the need to elaborate. I hate my three flatmates and dream of killing them for the following reasons:

They never clean ANYTHING and completely trash the flat within hours of me cleaning. Our kitchen is tiny and I can't cook and haven't done for almost two months because there literally isn't room from their filth and dirty dishes.

They don't work and are in the house 24/7, often having loud parties midweek and late at night (at least twice a week) when I have to get up the next day for work. When I politely ask them to keep it down, the guy gets aggressive and ignores me.

They don't wash their hands after going to the toilet, ever. Wees, poos, one of them is literally vomiting right now but does he wash his up afterwards or bleach out the toilet? Take a guess.

Two of them (a couple) keep two cats in their tiny room - they ofter go away for days on end and leave the cats (one of which is a tiny kitten) without any food, water, or company. when they do this I take them into my room and feed them out of my own pocket and look after them out of sheer pity, even though they have shat and puked in my room as their owners clearly haven't bothered to train them.

The man in the couple screams and bawls out his girlfriend frequently and audibly in the most offensive, sexist, and derogatory way. I think he might even hit her (I've heard crashes and her piercing screams coming from their room, but when I check it out they act like everything is fine).

They eat my food and use my bathroom products. They used a whole bottle of olive oil which I hadn't even opened (due to my inability to cook due to aorementioned filth and grime) - they even use my razors.

I could go on and on and get increasingly petty but basically this is it - everything is filthy, everything is covering in bacteria because of them not washing their hands/ leaving their rubbish in the halls and kitchen, the bathroom is covered in pubes and encrusted dirt, they are loud and inconsiderate, they are HORRIBLE to their pets, and two of them are in some fucked up verbally (and possibly physically) abusive relationship. I am moving out because of it even though my room is huge and extremely reasonably priced for central london - I'll have to move somewhere half the size and much further from work for the same price.

I feel furious that I am being pushed out of what could be a nice flat because of how they are, and though I wouldn't act on it and am leaving in three weeks anyway, I'm starting to have extremely violent thoughts towards them. I dream of paying someone to beat them up after I leave (although again, I'd never actually do it). I'm not a clean-freak or a stay in obsessive - I party, but I don't bring it back to the flat, and I don't mind mess, I just object to rotting items, pubes, and ingrained filth. Is it normal to feel so furious or am I overreacting?