Dr. you are rushing to conclusions. There are lots of prediction for doom and gloom and I am quite confident that they will not materialise. London will be a great financial city, even greater after Brexit. People will still be wanting to come to these shores for work and for living a better life. In fact if anything, I bet the freedom from the EU will be a catalyst for many more to come.
There is time, don't rush. The long terms is what matters, not the short term drop in the value of pound sterling.
As for our children, I am sure Brexit will save them the burden of debt from countries such as Greece, Spain, Portugal, Ireland and anyone else whose economy hits rock bottom in the EU. Again, wait and see.
As for the EU funds going to places like Wales, where do you think the money came from in the first place? Does the EU have a money tree? No, the EU gets far more than that from the UK and then distributes it, having wasted much of it on pencil pushers and fat-cat bureaucrats.
Come on, some basic knowledge of economics please. posting links to the leftist Guardian is not good enough.