I still use them on wildlife pokemon
in battle all wild pokemon have max. stats, so I usually calculate what speed I need to outspeed for instance a Golbat
but also the chance of 1hitting a pokemon is good to know sometimes
not everybody agrees with that^ statement though
but I would like to know if there is a 3rd-party IV calculator for older versions?
EDIT:
there are 2 IV calculators on Serebii, one for the old version (which is being used in PWO) and one for X&Y
link:
http://www.serebii.net/games/iv-calcdp.shtml