The ONLY reason brass was originally nickled was to prevent corrosion of pistol ammo in police leather belts. Of course others thought it looked cool so the makers responded to that whim, even eventually to doing it to rifle brass.
There is no advantage to nickle plating to a reloader and some definite disadvantages. First, it's much less malleable than brass so it flakes off during resizing. Second, it adds a bit of thickness to the brass and gets reworked more during sizing. Third, the flaked coating may scratch the sizer. Forth, "old" plated brass looks grungy.
I use it only when it comes to me for free and then mostly for serious defense ammo that I rarely fire. (Never fired a round in need but do check it for accuracy occasionally.)