Undemocratic, bureaucratic, waste of money, lack of control over our borders, uncontrolled immigration causing massive pressure on public services
Now can you tell me why we should stay?
Most exports/trade are with EU countries so any goods sold int he EU will have to comply but we will have no voice in what those regulations are.
We do have control over our borders, that's why British border controls are in Calais.
Uncontrolled immigration - yes a lot of younger people eager to work have entered the UK, but in the 1970s/1980s a lot of people left the UK for Spain, if we leave the EU will they be coming back to Britain? Having paid nothing in to the NHS for decades but bringing their health problems with them?
Staying on health care, as EU citizens we can access health care in the EU on the same basis as locals, so if break your leg in France and you will be treated the same as a French citizen. If you have a long term health condition that needs regular treatment you can access that abroad, I'm thinking things like kidney dialysis It is now possible for someone on dialysis to travel abroad for a holiday and receive dialysis on holiday.
If you need an organ transplant it can be sourced from the EU.
Some EU countries have no uni fees and teach in English, at the moment students have the option of studying for free in Sweden and for much reduced fees in Germany and Holland either at undergrad or postgrad stage.
The Hillsborough families had the option to go the the European court of human rights and the only reason they got the new inquests was the Human Rights Act.
More frivolous reasons - buying alcohol and tobacco at lower prices in France then bringing them back with no limits, I remember when you had to declare more than 2 bottles of spirits.