Still waiting for those benefits we get, but you can add in the consequences if you can get past pure speculation, seriously the whole stay in campaign has been doom & gloom without resorting to fact.
We do NOT have "Free" trade.
You would have to be barmy to leave your front door open every night just to do business, so why are borders different.
You say none of the 28 countries "Need" us, why then do we "Need" them ?, nor as you know full well is it 28 countries who make the call, they will do as they are told by Germany and France, where are they going to find a market for the goods and services they depend on ?.
If we are out, then who has the pressure on them to do a deal, besides losing the 12+billion we tip up you somehow think they want to lose one of their biggest markets at a time when they will need to make up that shortfall.
Germany will not sit still as the only big cash cow left in while seeing its UK market disappear.
As we get our fishing grounds back, just where are they going to get their fish ?.
Argue the logic out of that ;0)