[Margaret Pilkington]

They have imposed a raft of restrictions...the working time directive is one of them.
They have taken away borders ...this reduces a country's ability to maintain an adequate level of security(and while we are not part of the Schengen zone it still has an impact)
People from the EU have moved here and taken jobs at lower pay..This then depresses the job market and wages for the people who were born here.
There is the impact of this freedom of movement on housing and other infrastructure.
They claim benefits for children who do not even live here...they send this monies back to the home country which benefits their economy rather than ours.
( you may tell me that this not their fault...that they are doing nothing illegal...and you are right...but in the country that the money is going to, it will buy more than it does here,again, not their fault)

They have told us that we cannot sell certain types of apple, bent banana's, curved cucumbers. This might sound like a silly thing to bring up, but it does affect all of us

The common agriculture and fisheries policies did have an impact on these areas...they told fishermen that certain types of catch were unacceptable which meant that fish already netted could not be sold...even though from a taste and consumer point of view, were acceptable...all that rich protein that could feed us, was wasted.
They restrict who we can trade with...this is to protect their markets.
And while we did not join the single currency(thank the Lord) they want full financial control...and yet they have not passed an audit of THEIR finances for more than two decades.
It is not always about what they HAVE done, but more about what their intentions are.
They tell us which light bulbs we can use, they are right now working on banning higher powered vacuum cleaners. This will not limit the use of power, it will just mean it takes longer to hoover up the dust.

The creeping politicisation, the fact that what was signed as a trading agreement morphed into something restrictive and controlling.
All this without any of the electorate being given a say in the matter.
I do not want legislation to come from Brussels, formulated by people who do not have the UK's interests at heart, who are unaccountable and whom we cannot remove.

I could go on...I am not sure if these reasons are specific enough to satisfy your questioners.
Personally I would be asking them, in the light of how the EU mandarins have acted and the way they have spoken about us as a sovereign nation, why on earth do they want to stay.
Though I admit that their answers might just have fallen into my deaf ear.

If by some means we DO actually get out. I have a bottle of Vintage Fizz (Dom Perignon) that will be cracked open to celebrate.