Is OTHER wrong in the post ? POST : Hello,

This may be long, I appreciate everyone that took the time to read this.

Important details to note:

My parents (56/55) are very loving however both of them are alcoholics, irresponsible with raising children and irresponsible financially. My dad constantly gets DUIs and is an abusive piece of shit most of the time and my mom enables the crap out of his and has now joined him in all this. They have both bought many homes, lost many homes, have been through bankruptcy, spent thousands of dollars on my dad's DUI cases, have left myself and my younger sisters (I'm 28,they're 25/24)for me to raise from a young age (7ish). They would disappear for days in end working odd jobs, they never showed up for parent teacher meetings or looked at our school work/ report cards. 

They bought a house under my name when I was young and didn't pay properly and ruining my credit to where I couldn't even qualify for a $500 credit card. 

However, they are always willing to help in anyway they can when they are sober. Our birthday parties have always been happy memories, they travelled with us alot and have bought us anything we've ever wanted (more or less within reason).

The problem:

My parents had a house that my sister and I helped pay for (the home that ruined my credit). They bought this house so that they would be able to help us out when we got married and got our own homes. When I got married last year, we sat down and everyone agreed to sell the home as they had alot of debt on it and would not be able to afford it without my help. The mortgage plus debt per month was about $5200/month not including cars and bills.

When they sold the house, they got a little leftover money after paying the debts, that we all as a family agreed to give to me to get a house and when my sisters decided to buy their houses in the future, I would give them their portions split evenly. As my parents are not responsible enough to hold on to it. 

My husband and I bought our home, and my dad went to jail shortly after for a few months and we tried to help my mom out as much as we can, we lent her close to $2000 even though my mom was not working. My sisters were paying all the bills and I felt bad so we helped. My dad has been out for a month, both my parents work now and they still keep asking for money and I refused even though they gave me money for my wedding and the house. One of my sisters still live at home and pays rent, the other one lives with me as it was toxic for her to live at home when my dad got out. 

I still lent them $500 yesterday, saying I borrowed it from someone else so they would be inclined to pay me back but I want to believe that this is the last time I will do it. 

WIBTA if I refused to going forward? 