If you only had perfectly targeted advertisements, you would continuously be pushed to spend more money and attention to products and services. You might say 'I am in control', but at the minimum it wears you down to stay disciplined. Since time and mental clarity are rather high on my list of important things to protect, I view all push-advertisement is a problem. But I prefer badly targeted ones.

It's different when you want to research something, like buying a mobile phone, when you go to their channels and pull in reviews, advertisements, etc.

You're all pushed towards something all the time by everyone around you. Trying to be in complete control feels weird, to be honest — are you sure it's worth it? Yes, I know that I am sometimes convinced to buy something I wouldn't think of buying otherwise, but the outcome is usually not half bad and I don't understand why I should guard myself from it.

"are you sure it's worth it" It is for me.

I think advertisement should be taught at school, so everybody can recognize when they are being pushed/nudged into feeling something. Because I think it does a whole lot of damage to society (obesity, stress, debt, etc).

I know it sounds depressing like that, but have a nice day :)

Because the purpose of my life is not to fill some corporation's pockets.

Yep, I'm the one who decides when and what to buy. No manipulation needed.