It's going to be real bad. REAL bad. All the evidence points towards that. Most people are in denial about how bad it's going to be.
Many people will have kids because that's all they can do with their lives and the kids won't get the (easy) chance to become a great scientist, leader or similar. It's sad, many children will be subject to completely idiotic parents and so much potential will be lost.
If everyone who was worried about climate change made their contribution by not having kids, then the next generation is just going to be all kids raised by climate deniers. If anyone should be having kids, it should be the ones who are worried about the future!
I don't plan to have children anyway, but I've concluded for instance but there's no point in making sacrifices today in the service of enjoying a comfortable retirement, because by that point western society will no longer be any fit state to provide for a conventional "life of leisure" retirement.