I think supermarkets taking pictures of my face when at a checkout is outrageous and should be outlawed, but I personally gain nothing by forgoing shopping for groceries where it's most convenient for me and my family.
> but I personally gain nothing by forgoing shopping for groceries where it's most convenient for me and my family.
Taking pics of your face at checkout is bad enough, but if you don't push back against the slow creep of data collection somehow, it will not end there. What they've really been pushing for, for a long time now, is Personalized Dynamic Pricing (https://www.researchgate.net/publication/338776528_A_special...) which means that once the store knows who you are (either by your photo, or by detecting the phone in your pocket, or by your loyalty card) they will alter the prices at the register to make as much money from you as they think they can get away with. They can drive up the price on items you always buy, or lower the price on certain items to attract you to them now so they can charge you more later. They can use data like what buy as well data like your income level, who the members of your household are, and what your shopping habits elsewhere are.
You gain a lot by pushing back on invasive tracking and violations of your privacy because those things exist only to let other people manipulate you and take more of your money. You'll likely never be told when or how the data someone somewhere managed to collect from you is later being used to screw you over, but it will be used to screw you over. Buy too much unhealthy food and your health insurance premiums go up. Buy a little too much alcohol, and now you've lost that job you wanted because your employer sees that and decides to hire the next candidate who has "better" habits. You never know what will prejudice someone against you, but all that data never goes away. It follows you for the rest of your life.
What you gain by pushing back is that there will be less ammo for others to use against you later. If that means driving an extra 10 minutes to the grocery store that doesn't record your face at the register, it's absolutely worth it for you.
That doesn't mean you can't ever go to disney world or that you have to walk around in Dazzle face paint to fool the cameras, but you should be aware of the risks to you and your children and you should be willing to take even small steps to protect them and yourself.
Laws are made by people. Those legislators sometimes respond to shifting Overton windows. Your actions and motivations can make a small difference. More actions makes more difference.
Consider the Suffragettes. Few people today would think women should be deprived of a vote. In the early twentieth century too, many thought it would be a good idea, but didn't want to make any personal sacrifice for the cause. It took single-minded actions of a few dedicated individuals and their tacit support by the majority to drive the necessary changes.