I've given you the reasons, less of a democratic deficit,
I think if we are worried about democratic deficit we need to start right here at home:
2015 General Election
Tories supported by 24% of the eligible electorate
Gain 36.9% of the votes cast
Win over 50% of the seats and
Have 100% of the power post election
And also
UKIP - 12.6% of the vote, just 1 seat (i.e. 0.15% of the seats)
Greens - 3.8% of the vote, just 1 seat
Yet
SNP - 4.7% of the vote and 56 seats
DUP - 0.6% of the vote and 8 seats
Compare that with the 2014 EU election
UKIP - 26% of the vote, gained 33% of the seats
Greens - 6% of the vote, 4% of the seats
SNP - 2.4% of the vote, 2.6% of the seats
So where exactly is the democratic deficit.
And that's before we factor in the fact that there is no democratic process for selecting members of the UK second chamber.
we'll save money,
No we won't, the net effect will be a substantial reduction in GDP, when the net direct contributions and negative effects on the economy of leaving the EU are taken into account.
allows us to control better control migration
We already can - except for EU citizens, but if we try to restrict free movement from the EU we will be fit with detrimental trade arrangements and that will further affect our economy.
allows us to negotiate own trade deals
Why is that an advantage - we already have great trade deals and negotiating as the EU means we get better deals and also are more likely to be a priority for deals for other countries, which is critical as deals take years and years to negotiate.
allows us to better control profit divergence tactics from the likes of Google,
Rubbish - the best way to ensure multinationals pay their way is through concerted action from lots of countries - and that is much easier within the EU.
higher wages for UK workers, etc.
pure speculation, but unlikely given the overall negative effect on the economy. And how high will the wages be for those workers laid off at those companies who are only in the UK, because it is within the EU and will be making plans for relocation to another EU country on 24th June if there is vote to leave.