Having had ~US$20K sucked out of my debit card (which was ~$10K more than I had), I can verify that you have essentially no recourse. Why the stupid bank authorized someone to go over by such a yuuge amount still baffles me...
Assuming you can stomach $50 in the case that you do drop the ball notifying the issuer upon realizing your physical card was physically lost, how do the rules differ appreciably?
Also, how does not having a debit card significantly alter the exposure of a given deposit account (eg through the ACH network), besides just having one fewer network address? It seems like the better option is to get a feed of transactions in a convenient manner, whether tablet notifications or an ofx feed.
(Not that I don't want to stick it to the banks as hard as possible for perpetuating this negligent payment network and tricking customers with terms like "identity theft", but just pragmatically speaking)
So once you assume whatever you use will get stolen, you determine what dealing with a stolen card number will be like. With debit cards it's your own cash locked up in a transaction dispute. With credit cards its the credit card companies credit balance and you have no money locked up.
You generally share your bank account number with a small number of trusted parties: employer, landlord, creditors, utilities, tax man, etc. Exposure is low. When you start swiping a debit card around town, you hand out the same level of access to every merchant you buy anything from, and whomever might be skimming their terminals or stealing their databases.
Credit card fraud adds to your balance, but you don't have to pay it while the investigation is ongoing. Typically they revoke your card number and mail you a new one. During that time, you live off of a different credit card your debit card. Critical payments go straight to your bank account and are unaffected. When the investigation is over, the charges disappear. At no point are you deprived of actual money, you merely have an inflated short-term debt.
Good point about a check bouncing though. I would think your bank should waive any charges (after all, you weren't defrauded nor did you write a bad check), but the recipient might complain about their bank's fee (for essentially a rejected ACH transaction, but I digress). Although speaking of checks, readily handing out a printed withdrawal key seems like a poor idea if your goal is avoiding surprises!
Every second website I buy stuff at has my IBAN.
Looks like it's a vety different situation here in Europe.
Sadly, too many US websites don't allow this, I ended up having to get a CC (and pay for it!) just to deal with US bullshit websites demanding a CC. That CC cost me more in fees than I've ever kost in debit transactions.
EDIT: IIRC, the Debt-to-Income ratio calculation (if you were to apply for a mortgage, for example), is based on your aggregate credit-card limits (used or not), on the assumption that you could be that exposed. I remember when I were a young lad, I had to kill a card (or two?) that I wasn't even using in order to get the mortgage rate I was looking for because of this effect.
There are certain types of payment which are also classed as a cash advance and sometimes catch people out, such as to gambling sites.
So it's generally a very bad idea to get a cash advance on your credit card, especially a credit card that you also use to charge other purchases.
I only need it for american services though, all EU services I use accept SEPA pull or push, Sofort, giropay or Paypal with a bank account (strangely enough, some american services in the past declines to accept a paypal account without credit card, weird stuff)
Same goes for any SEPA DD based transactions. Everything else is secured via TAN, which depending on what generator method you choose (SMS, Optical, HBCI or Smartphone App) has varying levels of security (Optical and HBCI are highest atm, then App and SMS last, atleast according to my knowledge and understanding of the implementations).
The only bad part is when paypal fucks you over but that's a given risk when interacting with paypal anyway.
Also my bank issues me temporary debit cards for online purchases.
I can chose if the card is for one purchase or for multiple purchases with the same entity, over a period up to 12 months.
I can set a monthly or a total limit.
I can request as many cards as I wish and they are free. I use a new card for every online purchase.