It’s ok! Not everyone does. If you just find them appealing to look at and not to eat, that’s totally ok (we generally don’t eat houseplants, so I’d say it’s entirely ok to just grow something to enjoy looking at!) they will decompose quickly after they’ve fruited, so you won’t be able to grow one giant mushroom in your living room over time, although I dearly wish we could. If you find yourself growing them without immediate plans to eat them, you can dehydrate them and keep them in a jar for future cooking (a small silica packet added to the jar will help maintain dryness so that they last longer) or gift them to a friend that loves to cook, you’ll make someone’s day!