Decency is something that is inborn I guess because many people who are very educated and well off do not according to me have basic decency.
To be courteous is very desirable but many do not realize it.
Some people want things done very quickly and are impatient. I have met such persons in store counters who push into queues so as to reach the cashier early.
A decent person is always loved for his good manners.
I hope the future generations do not forget to learn such good behavior because the existence of a good society depends on its citizens.