Like acting toward Cats

I don't care if cats ignore me when I speak to them, but I slightly mind if someone ignores me when I speak to them. What's the difference I feel in these two situations? 

There are several semi-street cats around my house. They are so lovely and I speak to them when I meet them. Most of the time they ignore me or run away from me. I don't care about their attitude. It's a natural reaction as cats. On the other hand, I would mind if people do the same behavior to me.

Probably, I understand the differences between cats and I. However, I haven't understood the differences among others. It's proper that we have differences in every aspect but I should expect others to replay some specific reactions too much. How about I act towards others the same as for cats? So, I don't need to care about the reactions from others.