I feel I should seek help for depression but for some reason no matter what I'm told I never believe that therapists and such truly care. If I did see a professional I don't think I would bear these thoughts in mind. What should I do?

A therapist is not going to cry with you, they'll rarely laugh with you either. They are a neutral "listener" who will help YOU help yourself. They do care, otherwise, they wouldn't be in their chosen field. They can't read your mind and will constantly ask questions to determine what is going on in your mind and make suggestions on how you can help yourself. Give them the time that they need to help you, it can't be done over night.

Best of luck to you.

Their job isn't to care about you. Their job is to care about how you are handling your life.  A good therapist will keep their feelings out of it, and help you deal with yours. It may sound cold, but it is actually a good thing. They give you an unbiased point of view to help you see past your pain.

If you don't give it a try, you will continue to just suffer.  As someone told me once, "Do SOMETHING, even if it is wrong. At least you will know and can then try something else.", 

Tell your therapist that you think therapists don't (or couldn't---whichever it is) really care about the people who come to them with the issues they need help to deal with----I guarantee you won't be the first patient that feels that way, and you won't be the first person that has said that to them.

One therapist when questioned about how he feels about all the different patients he treats with different problems stated:  "I hold all of my patients in warm regard."

Therapy is not something you do for a living if you don't want to help people.  Pretending to care if you don't is way, way too much work.

Best of luck.  (And by the way, the way you phrased your question makes me think you are a very good candidate for successful therapy.)