It is a very difficult cycle to break though. Someone who has experienced the pressure of their parents grooming them in childhood to look after them in parenthood will in all likelihood reciprocate the process.
Every so often, the cycle will be broken by an altogether altruistic individual who is under their parents' emotional clutches but also lets their child live their own lives.
I wouldn't vilify Triggerboy too much. As much as we all would say we would do differently, I can understand why he/she is the way he/she is. It doesn't make it right, but it makes it understandable.