You are not just making bubbly water; you are performing science. You are a rebel against the kitchen appliance industrial complex. Plus, you can impress your friends by saying, “Oh, I ferment my own sparkling water. It’s a little hobby.”
And it’s cheap. A single packet of yeast costs $1 and makes gallons of fizz. That’s like forty cans of LaCroix for pennies. Your wallet will do a happy dance.