It's true about many people. But there are some that genuinely want to help or are genuinely good.
It's hard if you've been betrayed or have had your trust broken many times, but I try not to let that make me cynical about the light that does exist in the darkness. And maybe none of that has any substantial meaning if there is nothing after this. But it's still how I would choose to operate in life even if I knew for sure this was it.
You can't ultimately control other people or this world, but until your day comes for it to be over, you can choose how you treat people and what your personal morals and beliefs are. Unfortunately at times you may have to be guarded against those wolves, but some of them really are empathetic like many here are.