There is no such thing as too many herbs! The beauty of herbs is they can be grown indoors and outdoors without much effort. If growing indoors the main requirement is light followed by proper watering. Herbs tend to like to be on the dry side. Many will grow nicely on a window sill or on the balcony. A couple of our kids gifted me with two potted herbs for Mother's Day.
There are several varieties of basil and quite honestly I would have one plant of every one of then given my druthers. This herb when used fresh really adds that extra and in my opinion fresh is far better than dried so is well worth cutivating indoors during the winter. Basil is an annual in our area so basil plants in the garden are brought in to overwinter indoors. Clippings will root in water which is quite handy if you don't want to dig up plants in the fall. Basil is best if you don't let it come to bloom so harvest leaves often. Pinching will result in a bushier plant. It does grow well indoor and outdoor plants overwinter well indoors as well.