Bitcoin is the most talked about and top class security for transactions in the world today, where no third party has a hand and. Its popularity is constantly increasing day by day.
my own think
Your right Bitcoin has no third-party control every machine that does bitcoin mining and keeps the transaction process running is taken into account a neighbourhood of the network and every one the mining machines works together. So theoretically, no central authority can cheat during this monetary policy and as a result no accident is probably going to happen people use such a lot of bitcoin due to this security system.