I say no by default to companies asking too much information all the time, here in NZ companies seem particularly bad at asking for this info, and it's become s

I say no by default to companies asking too much information all the time, here in NZ companies seem particularly bad at asking for this info, and it's become so normalized that I always get weird looks when I say no, which annoys me even more. Why does my barber need my email address and phone number to cut my hair? Why does the supermarket ask for my address when I'm just trying to buy a bottle of milk? When I buy trousers it's sign up for the membership plan and fill out all these personal details. No, No, No. I'm not putting all of my details in your crappy insecure database - and yes, I know it's for "marketing" purposes, I dont want your spam either. It's infuriating.