locked BL no root?

New Samsung S6 Edge owner here (Verizon), Ive only had Motorola phones since about 2004 (and non-smartphone), so this is a new experience for me with the Samsung. With my RAZR HD MAXX you could have root without unlocking the bootloader, but this is weird that you cannot root the Samsung with a locked BL?

Looks like I am going to have to forget everything I know about Moto and Ill be learning some new things...

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