Talking about some advantages of Brexit

Most people say that it is not a wise decision for Britain to leave the EU, but there are still people who are willing to vote for Brexit. Therefore, let's talk about the advantages of Brexit. Firstly, the EU workers will have to apply for visa sponsorship just like other overseas workers, this decreases the competition in the labour market, especially the low income labour market. Secondly, Britain could control its border, this make Britain easier to defend terrorist attacks. Thirdly, it could prevent British businesses from the EU as it could increase the tariffs when Britain leaves the EU. Therefore, people vote for Brexit is reasonable.