I don't know why it's the same reason why you like some music and you don't like others. There's something about it that you like. Ultimately I don't find it's in my best interests to try and analyze it since it's fundamentally emotional.
Advertising is fundamentally persuasion and persuasion happens to be not a science but an art.
The thing is I don't believe in most of what's done. The amount of financial and imaginative energy that's put into mediocrity is just amazing which I find to be fundamentally offensive as a human being.
The way life manages information involves a logical structure that differs fundamentally from mere complex chemistry. Therefore chemistry alone will not explain life's origin any more than a study of silicon copper and plastic will explain how a computer can execute a program.