after his graduation from college why did Chris decide to no longer accept money from his parents

Chris learns that his father had a double life for many years, and his parents lied to him about it growing up. Interestingly, when he returns from this trip, he seems more interested in school and a normal future than he did before, but once he moves back in with his parents for the summer with this knowledge of their secrets, his anger seethes, and he starts to resent his parents more and more. This resentment also spreads to the society that his parents are part of. Although they both grew up poor and made their own money, he has always looked down on them for their materialism, and when he learns of their dishonesty, he starts to feel strong antipathy towards anyone with a lot of money.