It appears that mainly middle aged and senior citizens are interested in gardening, growing plants. The young people are mainly interested in enjoying themselves, drinking beer and other alcoholic beverages, they do not get any happiness or pleasure gardening.
It could because in india in 2017, most of the better opportunities are only reserved for young people who are less than 30 years, and indian intelligence and security agency employees are allowed to waste a huge amount of indian tax payer money to block the opportunities available to older people stealing leads,orders,, often making completely fake allegations without any proof at all against the older person
On the other hand, older people, senior citizens have almost no opportunities in India due to persecution of security and intelligence agencies and are looking for a relaxing way of spending their time productively. Gardening is one of the better options for middle aged people and senior citizens, especially those ostracized in the tech and internet sector, where ageism and identity theft is rampant.