this is highly subjective topic, nobody really knows what mankind truly needs long term in current state. we can state our own personal preferences that would i

this is highly subjective topic, nobody really knows what mankind truly needs long term in current state. we can state our own personal preferences that would improve things we care for, but that's another topic with possibly different outcomes. For example, I can easily say we need more people with high moral standards who don't lie, cheat partners, friends,family and do overall positive added value to mankind. This can be anything from freeing a seat in full bus to granny/pregnant woman to curing some specific type of cancer, and anything in between. They don't even need to work hard on this, even small positive action here and there, multiplied by 7 billions, would change our lives gradually for the better. But that's just my subjective 2 cents :)