by D a N i E l L aI don't know about most people...
"Many" would probably have been a more appropriate word.
by LeggaThat's one purpose.
@Air: I'll reply to you later
I believe that's why everyone does what they do. A person does some thing because they feel they should. In cases where people are doing things they don't want to do, they're still doing what they feel like doing, whether that be in the form of avoiding the consequences of the unpleasurable actions, or because of cowardice, or a narrow emotional perspective. This holds true even in the case where a "logical decision" is chosen over what "feels right," as the person who makes such a decision feels logic to be more reasonable, and in the end that is nothing more than experiencing displeasure to avoid what is anticipated to be even worse displeasure.
I don't know if I would consider how I conduct my life to be "purposeful" though, as purpose implies an objective. We discuss in this thread "personal meaning of life," or subjective purposefulness. But for me, doing what I feel like doing is not a purpose to life.
There are purposes for my actions (all things ultimately have causality), but I do not regard doing what I feel like doing as a way to make sense of my existence. I believe existence is inherently senseless, and that "making sense of things" is a natural phenomena of the human state—our brains are designed to structure reality so as to do the things we are "designed" to do.
Ironically I am doing exactly what I've just described by categorizing my reality in such a way (a perceptual lack of narrative is a perception in itself). When Rene Descartes famously said "I think, therefor I am," he was simply trying to prove his existence itself, but I think those words describe so much more than simply existing. They describe what it is to be a being driven by categorical imperatives. He thought his thoughts proved his existence, therefor they did to him. All people behave by categorical principles, but I don't think many are aware they are doing so, and even fewer still are aware that such awareness is yet another categorization.