Why do people always online diagnose me with BPD even though doctors won't?
Are you really saying that? Do you believe something you said or did online is the reason people diagnose you?
What I say has nothing to do there. Maybe because I'm a social outcast.
While it is strange that many people seem to diagnose you, it is not good to take their words seriously. A diagnoses should only be done with a professional.
So what? It's my life and I can do anything I want.
It truly is your life, but I'm just trying to say that doctors had years of knowledge and training to make proper assessments, not random people on the internet. How about trying to visit a doctor and listen to what they suspect you may have?