However, if you supply an asset based debit card with Bitcoin that has a reliable debit system in place like visa or master card, then there will be the benefit of spending your bitcoins, along with fast micro transactions.
Doesn't that put a third party in the middle, add reversibility, and defeat the purpose of bitcoin?
I guess so, but in my mind, I think the true purpose of Bitcoin is to be without a bank. Of course Visa, MasterCard, and others would act as a third party in a way, but they aren't a bank, just an easier and faster payment system. I'm not saying people should go stupid with it and keep all their eggs in one basket by using a debit card as a wallet in general; but rather to store some extra coin away there for the added benefit of being able to actually use your Bitcoin for everyday life, and everyday life transactions are usually always micro transactions.