It wouldn't require that every instance be completely nullified, and this is where compatibilism comes into play.
I think it would. To cut to it, free will is essentially held to be
"the ability to choose between different possible courses of action unimpeded." Compatibilism necessitates free will, as it is the belief that free will and determinism (in essence, that everything is determined based on the variables that you list and more) are compatible with one another.
So in either instance, free will exists. What changes is the extent to which it is used. Contrast the human experience to that of a computer. A computer does nothing without our input. Programs don't run on their own, or following semi-independent schedules that
we assign to them. They (thankfully) do not have free will. We, on the other hand, do, Even considering things like marketing, motivation, or cultural norms; if free will did not exist then those things would not be necessary, or would not exist either.
Having outside influence doesn't negate the existence of free will, because our decision wasn't
impeded. Even when our actions and decisions are decided for us, this doesn't negate the existence of free will because there are situations and instances where our actions and decisions
are unimpeded.
Even then, marketing isn't a guaranteed. I'm told that the new iPhone [whatever number they're on] is the best in the industry, and I absolutely
need it to remain on top of the latest trends. It's got all these nifty specs, fast connection, and is probably more compatible with the providers in my area than my Windows Phone is. It has more universal apps, connectivity with other people, etc, etc. And yet I decide not to get one. I have the money and the means to do so, I just don't like Apple. That decision is
mine, and the reasons that decision is made are
mine. The will behind that decision is not determined by marketing or culture - in fact, it's somewhat contrary to it - it is simply an extension of my [free] will.
We can easily prove a car exists because it has physical properties.
Then something intangible, perhaps, like love? Does love really exist, or is it nothing more than chemical addiction?
Yes...."Inherent" means "existing in something as a permanent, essential, or characteristic attribute.
Congrats; that's
exactly what I said.
Laughter and humor for example are inherent in all humans.
Except for people with no sense of humor and sociopaths. Also forgetting that humor is largely a cultural thing; what one society finds funny another might not.
When something is "inborn" it is passed down from parent to child. It is inherited.
No. To inherit something is to receive it upon the death of it's former holder; something like money, lands, or leadership roles. Being born with traits inherent to humans doesn't kill our parents, and we do not "inherit" them.