Is it that hard to say thank you?

I was able to find my password again the day before. Even though I try to write it, I don't feel like it and I can't reach the pen.

There are good and bad things that every person does in life. Most of the time, we try to turn to the intention of being good. I believe most of us have succeeded. I helped someone on the trip yesterday, I said come and sit in my own seat. Because he was looking into my eyes so that I could give him space. In the end, he achieved his goal, but he didn't even say thank you.

Sometimes I have trouble understanding people. Is it that hard to say thank you?