As its Half Time, my quick view fwiw. Wouldnt want to rejoin cos I understand we would have to adopt the Euro, which I have always been against.
Remaining as we currently sit? Free and stable trade, huge benefits for financial services, production, and distribution via the customs union. Free movement of EU citizens is a good thing for the UK, and something anyone under 40 have always known.
Negotiating trade deals as the EU will result in better terms than 20 plus individual deals.
I get the political bits and bobs can be a pain, and the regs can be tiresome at time, but thats generally not something that materially effects folk in everyday life. Filed under irritating.
We have a veto on major decisions.
On balance, prefer it to wing and a prayer promises from the likes of Rees Mogg and Farage.