Cash is superior to crypto for anonymity and most people have it, know how to use it and accept it. Bitcoin and the majority of other coins will leave a permanent trail which can be easily associated to the person due to KYC policies and onchain analysis firms. Sure there are privacy coins like Monero but they aren't trivial to acquire without KYC and to find someone that accepts it. So I'm happy that people still use cash despite not doing anything illegal (or immoral) and mostly making payments with card and instant payments.