Is it normal that i feel sorry for random people

Hello today I wanna ask whether it's normal to feel sorry for random people?

Usually I am a cold hearted don't give a fuck about anyone but myself, but sometimes when I see someone so helpless, lonely, and vulnerable I get an over the top feeling of sympathy empathy, and a bit upset. Especially based of there looks, and how they talk.

I don't care about babies, I don't care about the disabled I don't care if a baby is being cut up, and dismembered slowly by sharp knifes fuck em, but when someone is so desperately helpless and lonely I can't help to feel extreme sympathy, and feel like I should help them.

Maybe I'm just fucked up? I've commited some horrible acts in my life that I don't regret not have any remorse other, but when it's comes down to the lonely and vulnerable, I just want to help them!

Examples: a girl has a horrible mutation, she receives non stop hatred, and is isolated, and is emotionally broken down, has no friends or family, she decides to help someone out of pure kindness, but then gets brutally raped for the mutation she has on her face, day after day, night after night, she contemplates commuting suicide, she is submissive and totally withdrawn, with no one to turn to she gets a rope and hangs herself, leaving a note of how she helped someone, days later people read it and begin to take massive shits on her grave, and begin to humiliate her whilst she is dead, retribution is never done, and the life long anguish and horror she has been placed on exists forever.

Why is this?