I often here about people using charge backs a lot. But I only have debit cards so for me once I spend money there is no recourse. I should get a credit card I guess.
I've personally used price protection, roadside assistance, extended warranty, and concierge service. Plus many thousands of dollars worth of cash back, points, and miles (probably close to $10,000 total).
OTOH, getting a credit card and paying the full balance every month is S good way to build your credit history and scores.