Yep I am Mel's Husband. And I am glad you read that book!
Either way you look at it is YOUR decision. For me it was a bad choice with the best intentions. It is very easy to use them in the wrong manner and fall into a mess. Yes there are people that can use them with some responsibility, but most don’t. Credit card companies make billions off of the ease of use and people with the best intentions. In fact a debit card will do everything a credit card will do and they are covered and protected just the same as a credit card.
Info directly from visa.com
Important facts about debit cards
* Debit cards have the same security protections like as credit cards. Just like credit card cards, debit cards have Zero Liability fraud protection and dispute resolution options.
Zero Liability fraud statement
http://usa.visa.com/personal/security/visa_security_program/zero_liability.html
Like I said the decision is up to you. You DO NOT need a credit card to build a credit score. A car loan or mortgage will do that. I may get flamed for all of this, but lets compare net worth in 10 years of my debt free lifestyle.