Am I selfish for telling my adoptive parents they need to get a job to support themselves?

Im working and living paycheck to paycheck and I always support my adoptive parents they always ask me to buy them something like new mattress that costs ($80) for a third world country or when they want to eat out in restaurant. I bought groceries for them too and now I noticed I never buy anything for myself like new clothes or jeans or new underwear I can't afford it myself even braces I like to get braces because Im so conscious of my teeth I told them I'lll get braces next month and I will be using my salary to get new braces and they need to get a job now to support themselves and they called me selfish because Im being selfish with my salary
Am I selfish for telling my adoptive parents they need to get a job to support themselves?
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