Just because Cameron hasn't done it I will. The benefits of the EU are:
1. We have the freedom to live, work or retire anywhere in Europe (and around 2 million have done this).
2. It sustains millions of jobs.
3. Holidays are much easier (and safer - you have the right to emergency treatment, and also consular protection from any EU. embassy anywhere in the World).
4. Consumer protection. Better environmental rules & workers rights eg. maternity pay.
5. Cross country coordination and cooperation in the fight against crime.
6. The net benefit of EU. membership has been estimated as between 62 and 78 billion pounds by the CBI.
7. We have greater influence in a globalized World within it.
I could go on and on here. Now the myths of Brexit:
1. Britain will be overrun by EU. migrants, placing pressure on our social services. Pressure on wages etc.
Fact: Nobody can actually say how many are in Britain because there is no effective registration system. The estimate is 3.3 million. Unemployment is very low in the UK. & immigrants are not only able to integrate into this workplace but also create new jobs - every seventh new business is started by an immigrant in the UK. which is responsible for providing 14% of all new jobs.
2. Tales about how expensive Europe is (the 350 million per week story).
Fact: Half of all money paid by the UK. is reinvested there, either through agricultural subsidies, EU. financed projects or research grants. In terms of what the UK. actually pays in relation to GDP. after all these rebates, it drops to number 10 in Europe.
3. Over estimation of Britain's trading power.
Fact: A union of 28 states has more negotiating power than one alone. Obama has been very clear on this one. Any deal made with the EU. post Brexit would have to be agreed to by 72% of the delegates in Brussels (not just by the German car industry).
4. The criticism of a rule crazy unelected bureaucracy in Brussels.
Fact: Bureaucracy does get on many people's nerves, not just in Britain, but, this serves the interests of the largest trading block in the World - and is to this end. Decisions are made exclusively by representatives of the national governments and elected politicians (including British - the only reason they have less influence is because so many of them are from Ukip and never go to meetings, just run up their expenses). In 90% of all cases laws were made which the British voted for..
5. The banks will stay, and London will continue as the financial centre of Europe.
Fact: Investments are already leaving.
The claim is that through leaving the EU. we will regain our sovereignty - but, we will have to strike alternative deals from a position of weakness, and every deal limits sovereignty.
I'm sorry that I cannot find short sharp slogans which are repeatable in the pub - like Brexit can, I just pray that the British people will not be deluded and led by the nose tomorrow into something which younger generations will damn them for in years to come.