yeah, I use gw brushes as well, and they work just fine for me.
To me, it seems a question of two different states. The first is "when does your brush lose it's point?" and the second is "what's the default state of the brush?"
For the first one, does your brush lose it's point really bad when you wash your brushes out? In which case, perhaps you're grinding your brushes too hard into the water glass. Does your brush lose it's point when you dip it in the paint? In which case, perhaps you are putting too much water in the bristles.
For the second one, do your brushes have a point when just sitting there? The bristles will get "used" to where they are in relation to their base, so if your brushes usually don't look pointy when not in use, it will be less likely that they will be pointy when you want to use them.
Otherwise, my only other guess is that you're being really hard on your brushes, especially while cleaning them (I know, "really hard" is relative, and you may think you're being gentle...) Otherwise, brushes' tips tend to get pointier over time, as they lose bristles, rather than less.