Ditto LittleDudesMom. I'll say with about 95% certainty that you will not fully understand your parent's choices, decisions and/or lack of them until you become a parent yourself.
At your age, I went through a whole "blame the parents" phase. And yes, it was over legitimate concerns. Only after I had children, did I realize the wisdom in some of Dad's actions. 16 years after my first child, I am in complete awe of my Dad of how well he handled raising me and my sisters. In some ways, I know I'm doing a better job with my kids than he did, but in other ways, he was so much better, I just can't keep up.
Parents are human, and as humans are prone to mistakes. They did what they thought was right. You don't like it, it's your job to change things in your adult life. Continuing to blame them for their shortcomings does nothing but confirm what we all know - they're human. So?
