It's literally all downsides, which you (not you personally) agreed to because of ego, thinking you can go back to a time when 'the sun never sets', when in actuality you've hastened much longer nights.
Sgt did personally agree to it because of ego. They cite wanting the UK to be a superpower again as one of the benefits of Brexit. He doesn't seem to understand the position Britain is in now.
It's literally all downsides, which you (not you personally) agreed to because of ego, thinking you can go back to a time when 'the sun never sets', when in actuality you've hastened much longer nights.