I started playing ten years ago, took a break for college and whatnot, and am now back and loving it. Since I left Speedball in my area has slightly less players, but nearly double the local tournaments. Woodsball on the other hand has more players than I have ever seen. All but one indoor field (that I know of), have closed in my city where all the outdoor fields I remember from ten years ago are still kicking (with a couple new ones as well).
In another ten years, I'm guessing it will this trend will continue in my city. It's really hard for me to speak to what will happen to paintball as a whole. I will say (mostly thanks to techpb in my opinion), paintball has one of the few internet communities that has become less toxic over the last couple of years, which I think may be a big help for the sport.