Depends on the particular person and their level of severity. When a bipolar person falls in life, they can much more easily end up in an endless cycle of depression and anxiety that they never dig themselves out of it. The reason being that they might start to build themselves up, but then they hit an episode, and it just shatters to the ground, and each time it shatters their confidence is ripped further down. If they stay social and engaged then they stay alive. Fortunately, modern medicine, while not a silver bullet solution, can be a great help in mitigating this condition. I have an atheist cousin who is bipolar and the loneliness, despair, and warped reality of his life is like meeting a person that has entered Hell. You can tell within 5 seconds that something is wrong with him. He’s so heavily removed from socializing that on the rare occasions I’ve met him, he can’t form sentences properly and he’s constantly trying overly hard to use big words to make himself sound intelligent, which more often than not makes him stutter a lot and he ends up trying to use lots of analogies in his speech that don’t actually entirely make sense. He won’t take medicine, I believe because his pride has reached almost incurable levels of depravity. The man is loathsome and scary and I honestly wouldn’t be surprised if he either killed himself or somebody else.
On the positive end, other people keep it under the control, and the condition has been known to inspire creativity and some bipolar people are very interesting to be around. Personally, I’m not sure if I could bring myself to date even a mildly bipolar person, but that’s because my personal experiences have freaked me out.