Get into nutrition as a side hobby. Get into cooking as a hobby. With cooking also involving you gathering your own ingredients.
Delicious food tends to be moreish. Ideally, delicious food should be relatively healthy and cheap or free.
There's the psychology of you eating something that you've prepared.
Don't worry if your first attempts at making something turn out awful. It's all part of the fun.
Masterchef is a fun watch. However, great food doesn't have to be complicated. Simple "rustic looking" food can be great too.