There are always benefits to being inside something. If you are a citizen of the EU, you have the right to work in any of the member states. US citizens do not

There are always benefits to being inside something. If you are a citizen of the EU, you have the right to work in any of the member states. US citizens do not have that right, and many waste long years trying to acquire it. It is likely that UK citizens will now face the same battle when they seek the right to work outside the UK, because the Leave vote was driven by racist impulses to keep the others out. The others will reciprocate against England.