Selfish and Irresponsible people

Selfish and Irresponsible people are the two category of people I hate most.
I find that many a time a person possess one of these qualities also possess the second one.
The creatures of this nature are hopeless.
They are not worth of any relation.
They really sucks. They would reach you when they need you and when you need to talk to them they would not even pick the phone.
They use you for their purpose and once that is accomplished they would forget you like the old torn book.
Talking about them is also a big waste of time...