Are insurance policies on loans and credit cards todays biggest financial scam?

I realised the insurance i pay on one of my credit cards actually covers them all, that the loan protection is a ridiculously over-inflated one, lumped onto my loan so that i pay more interest, and that if i cancelled all my policies and found one independent one to cover all my repayments i would be saving thousands. wanted to give you guys a heads up. i have been a complete fool.
Answer
Insurance should only be bought on things where the loss would be catastrophic. for most people that would be home, auto liability(collision maybe if it’s new) and life.