That is a big number - 7,000,000,000 - and we have may have hit that number already. We may not hit that number until the end of the year. But the UN reckons the number of humans on the planet will hit the seven billion mark in October.
Some are concerned, hell, many are concerned by the rise in population. But we humans should expect at least 9 billion of us sometime in the middle of this century before things start petering out. So what are we going to do about it? There is no point in whinging about better contraception etc, but to adapt to what is an ever increasing population in this world.
There is enough food to feed the world right now, but wastage and bad planning means that we waste a lot of it.
There is enough water to make sure we do not suffer drought, but again, wastage and bad planning get in the way.
There is enough land to make sure that everyone can live in reasonable conditions, but again wastage and bad planning make sure that there is destitution.
As you can see, a lot of the problems caused by overpopulation come from watage and bad planning. Or greed.
Oh well, in October sometime, we should not look at the pessimism brought about by seven billion people, but instead marvel at this fact: how an insignificant biped from East Africa came to dominate the Earth. Now that is something worth celebrating...