"It doesn't count if . . . "

I commend this article about sin by our brother Greg Gwin.

You've no doubt seen those tongue-in-cheek diet guides that allow a person to eat anything and everything if certain conditions are met. For instance: If you eat something and no one sees it, it has no calories! If you drink a diet soda with a candy bar, the calories in the candy bar are cancelled out by the diet soda. Calories don't count if you eat standing up. Cookie pieces contain no calories; the process of breaking the cookies causes ‘caloric leakage!’ Foods that are the same color have the same number of calories; example: spinach and pistachio ice cream.
This "diet plan” is an obvious joke. No right thinking person would eve rbelieve that eating like this could result in weight loss. Yet some folks try to reason this way when it comes to sin. They seem to think that: An act is not sinful as long as it is unknown to others. A thing is not sinful if everyone else is doing it. You are not guilty of sin so long as you can identify others who are doing things that are "worse.” If you like something, then it is not a sin. Sin only involves things that you don't personally like.
The Bible, on the other hand, says that sin is transgression of God's law (1st John 3:4). If a thing is contrary to God's will, it is a sin. It is a sin even if it is hidden from others, accepted by the majority, or considered less "serious" than other acts. Sin is always wrong. Think!