if you have a seven or eight speed freewheel
the axle will likely bend again pretty quickly
as the wide freehweels require a long unsupported drive side of the axle
the other thing that encourages bent axles
is the paralellism of the dropouts
if the rear dropouts are not perfectly paralell and in line
then they put additionl stress on the axle
a heavy load on a freewheel wheel
can bend an axle even if everything else is perfect
then the bent axle can misalign the dropouts
which can make future bent axles more likely