Is it normal i feel sorry for people that seem lonely & i want to befriend them

Some people seem really lovely & I don't understand why they don't socialise much or have more friends. For example, I know of this lady that works down the road at a dairy. She's been working there for about 20 years!! To me, I feel she could have done so much with her life & yet she just decided to stay working at a dairy. She looks cool & is very nice. I guess I just hope that she doesn't have any regrets & that there aren't unfulfilled dreams she hasn't pursued. I feel she's lonely as its an Indian families business and she's white & its not her family. I just hope she's happy.
Another instance, is my cousin who's 39, has no children or partner & lives by herself. She doesn't even flat with others. She's an amazing person and I feel really bad for her because she has a bad back condition that she needs to live off strong painkillers for. I just feel like she could be lonely & it saddens me because she could easily have lots of friends due to her being so lovely.