In life theres no being in the middle only, its either you die or you live. You have to choose one, and exist in one. But where ever/whatever you choose both sides still do exist. You just can't expirence opposites at once.because when you do you'll not be able to comprehend both happenings will leave you mad. You see polarities don't exist at once. You can't be happy both sad and happy at the same instant. But you could be happy a second ago then get sad on the next. And to a more broader level you can not be alive and dead at the same time but you could be l alive right now and could be dead in the next instant. So suffering i believe is the struggle of balancing to be in or juggle countinously both entities at the same time and choose one entity over the other. Its not for us to pick and choose what's existing because either way they will still continue to go on existing even if we hide from it