You can still die, just not from hunger/thirst.
And you have to hide it, or else governments around the world are gonna lock you to a blacksite and experiment on you. (I mean, you are essentially a weird mutant / supernatual being, governments be paranoid)
I enjoy eating, so they’d never notice. The only thing it could possibly be an issue is if they decided to try to torture me by starving me, and by that point I’m already fucked.