Re: I am really...
>going to miss the common sense rulings the EU have provided in many areas of life and business
UK will still be bound by them in the main post-Brexit, though there will doubtless be a few token gestures for the sake of political posturing.
Article 50 and the recently publishing EU Commission negotiation guidelines have the ECJ hard-coded for Brexit and post-Brexit dispute resolution - so in trade/governmental matters it will continue to bind UK regulations and law for many years - without the inconvenience of having British judicial representation in the court.