I would prefer that I could pay with Bitcoin all my bills
If you pay your bills by credit card then there is an opportunity for you.
There are many kinds of bitcoin debit card which you can easily spend your bitcoin and get instant into cash or spend online like normal credit cards.
but those bitcoin debit cards all charge extra fees which I personally find them and unnecessary expense. so as long as I can use credit card, and other methods I won't consider them a good option.
besides bitcoin isn't meant to be used through a third party. the whole idea is to be able to use it directly P2P and not rely on anybody else to do it for you and get paid to do so.
There are some that have less fee but the bitcoin debit card (plastic) cost to much.
If you consider this expensive then the best way it to find a e-store that accepts bitcoin through bitpay (most of the time)
The last option is to sell your bitcoin for cash and go buy whatever you want as usual.