Its more like I can't. Its not feasible in todays society to barter. No matter if we live in capitalism, socialism, communism or whatever ism we reside in, human beings will go to the depth to try and abuse whatever system it is and this includes the bartering system.
Lets say I am bartering my product online. A surgeon says " You give me x amount of your service and in turn I give you a surgery when you need it, sounds good?"
Ok lets say I need the service of the surgent but he might no longer be alive because he was in an accident and passed away. His colleges would be like " well the deal you had was with him not us, so we don't have to give you this surgery"
Your system sucks bro, no easy way to say it, it is simply a horrible deal and pain in the ass. You go to grocery and guy in front of the line once to pay his grocery bill by giving you a mouse trap. No good man, no good!