Don't have to - sure but with Brexit we chose to. You have continually not put one coherent argument for Brexit forward. Even your saviour Rees Mogg when pushed said perhaps the benefits will come in 50 yrs.
Price worth paying for what? You never seem to define anything - just leave it up in the air on a wing and a prayer.
A country that has considered leaving was Greece but in the end it decided against it and it was a net taker - the EU made it difficult for them to remain but they decided it was still better to remain than leave.
Your arguments seem to be formed on the back of a fag packet and you wonder why you have such a shallow understanding of the issues.