I agree. BPD sucks. But, along with the rest of the folks, I can say, "Life can get better." I know it did for me. It's hard to go through the train tunnel and get into the light, but there is light at the end of the tunnel. If you haven't tried it, then I recommend DBT and staying in therapy, even when you find yourself angry at your therapist and ready to quit.
I also don't know your age, and middle age might be way down the road, but research shows that BPD tends to lessen with age.