The most logical place is race. Inborn, genetic things people are born with. Orcs are strong, Dwarves are though, Elves are agile because thats simply how their race works when compared to humans.It seems to me that the most logical place to put the stat bonuses from character creation are in class choice, not background.
If people can't break out the minmaxer mindset to always take the race to optimize their attributes to their class so be it. Maybe at some point they will realize that the "role" in role play doesn't mean "ranged damage dealer", but WotC should not cater to this minmaxer, wargaming mindset.