I prefer lube. For me it's traditional. If I'm going old school and using cast bullets in 44 special, I like traditional methods.
If I was going 9mm bulk ammo, PC would fit nice there.
PC has some benefits, like if you have a gun that leads. And the bullets store well.
For me it has detractors. Time to do it. I can go over to the reloading room a few hours here and there, but rarely can devote half an afternoon at once. A place to do it, because of the smell. My wife doesn't notice a smell from my lubesizer. And I like to have a non electric way to do all my reloading activities. No way to powder coat without electricity that I've found.
PC adds to the nose of a bullet. For my 30-30, it's enough to jam into the rifling with nose riding bullets like the lee 309-150-F. So that's a consideration. Some folks will nose size... That adds more effort, time, money, just to avoid traditional lube.
I think there is room in the world for both grease lubed and PC.