Well, there is a big difference between using an actual high pass filter and using an EQ to shave the lows. If your console has a good high pass filter, than it's not necessary at the mic. Also, if you are using nicer mics, the high pass filters tend to sound a little smoother. For me, it's all about the sound. When I choose to use a high pass (my primary vocal mic doesn't even have one) it's only because the signal I am recording sounds better that way. I don't do it just because of plosives. If plosives are a problem, than usually it's just time to try a new mic, new position, or have a tlk with the singer and try and teach them some better mic technique.