Music can be a social thing. Not just in terms of showing others, but playing with others. Once you have become proficient you can always join a band, perform with a singer or teach others, meaning that there are benefits in terms of making friends and connections. Music has always brings people together.
Piano can reduce mental disturbance, provide a constructive activity and not only a desctruction from, but a route out of the troubles so many of us experience. It is a great form of relaxation.