Most of the people don't mind about it because it is just simple. Thus, they don't obey.
Unfortunately, that simple request is the most painful one. You know why?
Because it is just simple and easy to follow or do; and the action only proved that you doesn't care about her/his feelings if you don't do.
Furthermore, sincerity comes from simple things. Therefore, learn to do simple things, because every simple is great to some people for some reason.
