I agree with your actual point, but from what I've seen, people get creeped out by ads that: a: are clearly based on personal information ("I just bought a was

I agree with your actual point, but from what I've seen, people get creeped out by ads that: a: are clearly based on personal information ("I just bought a washing machine, now I'm getting ads for washing machines."), and b: are extremely irrelevant to then ("I already bought a washing machine, I don't need another.").