This depends on the person and the situation. Yes, many people feel lying is easier if they are trying to get away with something or manipulate you in one way or another. And there are a lot of people who have mental disorders which lying can be a part of... sociopathy for example is a lack of empathy which will make these people lie whenever they feel it is beneficial to themselves. Pathological liars could be trying to manipulate a situation or they could genuinely believe their lies or perceive reality in a way that their lies are true to them.
For the sane people - integrity is a good thing and yes, telling the truth can be morally and emotionally satisfying. I wish I could say there was a lot of these people but really... we've always been the minority.