Growing your own is SO easy! Herbs are hardy and can grow nearly anywhere.
They are incredibly cost effective and will more than pay for themselves (most seeds only cost $3!) If you'd rather buy a potted herb, you will not even have to wait for your product.
You garden will smell amazing and your food will have a great fresh taste that can only come from products straight from the garden.
You'll also probably become quite popular in your neighborhood. My rosemary bush is getting a bit out of control so I encourage my neighbors to come over at any time to cut as much as they'd like!