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 doubt anyone except my partner would notice, so I don’t need to live in fear of being found out. Besides, I’d probably still eat anyway because food is awesome.