We all need to vent - it's part of life.
I'd encourage you to find another way to vent about your parents.
I'm already on record as agreeing with you (in regard to not helping you get food for your animals). But I would not vent against my parents in public.
You think "they suck" now? You will think you've *never* felt pain if they find you talking like this.
And they will be right.