Customization - it is one of the main reasons that users pick an Android smartphone over an iOS smartphone. The average Android OS users can easily change the look of the screens, keyboards, music apps and much more. Some users what even more control over their Android smartphone, so they root the device - this wipes the original programs and bloatware off the device and allows the user to install custom firmware. However, removing the bloatware can sometimes have an ill effect on built-in features - one such feature you will lose is the capability to use the new Samsung Pay that is to be launched in the coming months.
The 'root' of the problem is that when you root a Galaxy S6 or Galaxy S6 Edge, it upsets Samsung's Knox, which is 'in charge of security' on your device. Samsung Pay uses your Visa and MasterCard numbers and banking information in order to make payments and Knox is watching over the security of that information. By tripping Knox during the rooting process, Samsung Pay is automatically shut down. It may be that in the future there will be a way to root the Galaxy S6 and S6 Edge without disturbing Knox and in turn, keep Samsung Pay alive and well.
It is very possible that many rooters will not care about losing Samsung Pay, and if this is the case, then root away. Ways to root other Samsung devices have been discovered that do not disturb Knox, so given time, rooting the Galaxy S6 and S6 Edge may not disable Knox and Samsung Pay. When Samsung implements Samsung Pay later this year, it should be a big deal and allow your smartphone to make payments at some 30 million retail locations. Samsung has already partnered with Visa, MasterCard and many large banking institutions. The Samsung Pay is the direct result of their purchase of LoopPay and their desire to battle Apple Pay, which currently only works in thousands of retail locations due to its proprietary system. What makes Samsung Pay so effective and accepted is that Samsung chose to use the Magnetic Secure Transmission (MST) method for making payments. Any retailer that allows you to swipe a debit or credit card can easily accept payments from a device with Samsung Pay built in. Only you can decide if this feature is valuable enough to keep or root.