Plants act as a way of improving your own nature/personality. A simple act of keeping a live plant beside you helps to build qualities of compassion, nurturing, etc. We think that we are taking care of our plant but in return the plants help us be more caring and kinder people. When we see our plant grow we get attached to it & that is shown to relieve stress & make people more caring. Our key here is the element of luxury - not by price but by quality