There could be several different reasons 1. You could realize that you could be treated better by someone else 2. You suspect cheating (even if it's not true) 3.
You lose interest in the person 4. To much arguing 5. Nothing to look forward to in the relationship 6.
You could even believe that you are falling for someone else There are so many reasons that someone would be unhappy in a relationship. It's mostly a mind thing and it all depends on how you look at the situation, the people that influence you decisions, how things are handled, and so much more.
Make sure you allow your partner their feelings and simply let them know that the relationship is not working for your life. Chances are that if you are unhappy, they are unhappy too. I am sure there are many more excuses why we stay in a relationship too long, but when you are unhappy in a relationship and have explored different options to heal it, making the decision to end it is the next step.
I would not recommend ending a relationship when you are in the middle of an argument or angry with the other person. It will not stick because when you get back on that "high" again with the other person, you will end up back together. This decision should come from a place of balance.
I cant really gove you an answer,but what I can give you is a way to a solution, that is you have to find the anglde that you relate to or peaks your interest. A good paper is one that people get drawn into because it reaches them ln some way.As for me WW11 to me, I think of the holocaust and the effect it had on the survivors, their families and those who stood by and did nothing until it was too late.