Meditation is not a waste of time. It is a wise use of one's time. It is the highest form of spiritual practice, and it fulfils the noble eightfold path. When one is meditating, one is not causing harm to others. One is cultivating the four foundations of mindfulness, the four right efforts, and right samhadi. Meditation trains one to seclude the mind from the five hindrances, and bring into being the seven factors of awakening.
Meditation purifies the mind, and the heart. It burns away the defilements, weakens the chains that bind us to the realm of Mara. Eventually, it breaks those chains altogether. Leading to lasting inner peace and freedom that can't be taken away by anyone or anything. It takes you to a place where Mara can no longer find you. Bringing a deep contentment and joy that does not rely on the world or others to sustain it.
I know in the world, there is darkness just now, and much need. It can feel heavy and oppressive at times. I keep thinking what can I do to help? I don't have any money, I struggle with health problems, I am unable to volunteer or be an activist. I am also not smart enough to think up solutions that could solve the world's many different problems. I don't have the gift of the gab either. I am a pretty useless human really. At least according to the inner critic (Mara), who often gives me a hard time about this, especially when I am about to meditate.
But Mara is wrong, I see this clearly now.
After much thinking and pondering, I realise the best help I can be to others is to meditate, is to become an enlightened being here and now, in this age, in this time. I should make good use of this opportunity to meditate, and not waste it. Work to remove the defilements of greed, hate, and delusion, so that they never again take root in this mind. Then I will see clearly and be of greater service to the earth and to others. Perhaps just my presence will be enough to show that enlightenment is real, and that it is possible in this age, in this time. Perhaps I can be a light in that way, maybe bring hope to others; because if a useless dork like me can get enlightened, then anyone with enough determination and inclination can do it.
I also don't need society or anyone's permission or approval to become enlightened. It is up to me, not anyone else. I am allowed to become an enlightened being if I want. What others think is their business, and what I think is mine.
It doesn't matter who you are. Rich or poor. Good or evil. There are people who did really bad things in the Buddhist scriptures, but they still got enlightened, they made amends by fulfilling the noble eightfold path, and broke free of Mara and Samsara.
It is not up to others to decide whether you can be an enlightened being or not. Whether you are worthy or not. It is up to you. You are the one who makes that choice, who puts in the causes and conditions, who makes effort. However long it takes, keep going. What you practise now builds up momentum, and is who you will become in the future.
Those who purify their minds are doing the Earth a great service. It is a noble thing to do. So never feel inadequate and guilty for sitting in meditation and training the mind. It is a noble quest that few take up in this world. And it leads to the greatest karma and freedom of all. The more beings that choose to take this noble journey within, the more things will change for the better. When we change ourselves, we change the world around us.
One should never underestimate the power and great merit that comes from the practise of right meditation.