@Kayriel i've played MMO for over 15 years and i will have to disagree with you
hardcore players who play mostly on endgame will do whatever they can to get even that extra 0.5% increase in their stats
we call it min-maxing, and depending on the game, even 1% increase is already very good
for example with games that have stats point in the tens of thousands, a weapon with 100 higher attack point would usually lose to a weapon with 1% extra damage when the character stats have passed 10,000
even better, if the extra percentage is applied to the final damage or it give a bonus damage that go beyond the damage cap
i can go on and on about damage calculation but it will be pointless to do here
i just want to say that 3% is a lot depending on the game