A few things in the World don't make any sense:
a song without a refrain, war without peace, Romeo without Juliet, a bird without a flight and a garden without a Pot.
We all like contrasts, accents and something catchy and itchy otherwise it is simply boring as a shoe.
Pots will add a 'human touch' and an interest to every garden.
Want visually to hide uninspiring wall? Hang pots with flowers.
More colour? Bright orange pots will do the job
Want to create a focal point in your garden? Large imposing pot will certainly help
Want to move your favorite flowers from one place to another - buy a pot. You can move it anywhere you like.
Nice display of flowers at the height you want? You know the answer ...