Balconies are extensions of homes and apartments having both a practical and an aesthetic purpose. For people that do not have gardens that the balcony occasionally becomes a small garden. Other folks enjoy drinking a cup of coffee and watching people on the road from theirs.
Being usually a small space the actions you can do on your balcony can also be fairly limited. But for people who reside in apartments, having a balcony in totally vital. It is their only connection with the nature, the only location where they can breathe clean air and enjoy the sunlight.