Why should i take care of myself?

Hi 27m here. As the title reads, i have always had an issue either taking care of myself, mostly hygiene/health wise. I probably have an issue with it because i grew up addicted to video games and with uninvolved parents. My parents are divorced and back then i lived with my dad the majority of the time. My dad basically did the same as me and didn’t cook for himself and had me do his laundry and clean after him. I would ignore my feelings and what i knew i probably should do (brush my teeth, clean my room, cook for myself) and only do what i deemed to be absolutely necessary/ efficient(eating fast/frozen food, getting good grades, take a shower occasionally/ good enough hygiene to have a romantic relationship) Now i have a high paying job and live on my own but struggle with convincing myself to maintain good hygiene and a clean home environment and cook myself food. I still do the minimum and just consume media/content with every other available moment. As a parent what would you say to someone like me?