That's a real person on the other side of the conversation you are having. Remember that. Real feelings, real thoughts, real pain, real love. Goals, fears, families, friends, hobbies, pets, and pet peeves. Never forget that. They are not a tool for sexual pleasure. They owe you nothing. You owe them respect. You owe them kindness. There is no excuse for any other behaviour. Grow with people, laugh with people. But when you can't evolve past "it's just a sex site" perhaps it is time to rethink yourself.