Question about IV breeding.

[Sparks]

In my time of playing pokemon I have only IV bred three pokemon. A gallade, a togekiss and a porygon-z (who I nearly gave up on because of trying to get hidden power fighting)

I bred them to get the stats I wanted perfect and the rest I really didn't care too much about.

So my question is if anyone else who IV breed's pokemon does so to get every stat as high as they can or just the ones they need?

[Immabeast]

I mainly doit so i get the stats i really need but it isnt hard to get high stats on all, just time consuming because id think you'll have to make em wear the Power Bracer, Power Band, etc.

Giving them a chance to get in that stats IV maxed out and keep doing that over and over making both parents hold Power Items??? I did that once and it went to like 25+ on every stat but took me 1-2 Hours -.- .

Got tired of it....