PPR is another way to recognize an individual's performance on the field. If the points given for the reception are balanced for the league, then it's another metric to measure a player's play effectively. What messes up PPR is that many league's haven't adjusted the points given as the years have gone by.
I've always played FF with the outlook that I'm gathering players for my own fantasy team, and then rating their actions on the field to help that team win. I've never understood when it's said that my fantasy team should only get points if the player's play helped their real team win. If I want to watch them help their real life team win, then I watch the real life game. For my fantasy team, I want to know if my player catches the ball well, gains yards well, gets in the end zone enough, etc.
The more stats to measure a player's individual skill, the better for me. But some others don't enjoy that, and that's ok, too. I've played both types and enjoyed them all.