What's the criteria on lying in advertisements? I'm pretty you can't just be flat-out telling lies, but I'm also pretty sure that there are a lot of false claims in a lot of ads.
We think that these companies really want to improve our lives with their products when we see their happy encouraging claims, when in reality they're just doing everything in their power to get us to give them money. But it works. If something is new and novel, we want it.
But without advertisements, how would I ever know what I wanted to buy? Word-of-mouth, I guess. Trial and error. I'd probably spend less money.