One reason, the main reason why I'm planning to break my streak is that I feel the habit has become an addiction. I'm no longer keeping up this habit - it is keeping me.
Keeping up the streak gives me anxiety. I just can't miss the daily writing. It forces me to think ahead to make sure I have time and place to write. It makes me withdraw when I'm in the company of others. It dictates my days.
In the beginning it was great. A new challenge that kept me going until the habit formed and it became natural and easy. Then it just kept going. I didn't need to think about it. Now, it's an obsession.
I even allowed myself to break the streak, tried to convince myself it's not that bad if I miss a day accidentally, or when I didn't feel like writing. Still I have been writing and writing. Even though there have been days when it felt impossible. Impossible to find time, or to come up with something to write.
I have proven that I can do it. Now, once again I need ro prove myself I can do it - I can break my streak, my addiction. Sure there are way worse addictions than writing 200(ish) words every day. But it's still an addiction.
Also, breaking free from an addiction sounds much better than breaking a habit.