There's a lot of well reasoned critiques of how sprint affects multiplayer. In short: sprint is an easy out for players who are losing a fight. Someone pops your shields, and you sprint around a corner. The only thing they can do now is chase after you, and even if they catch up, they can't shoot while sprinting, so it's just a chasing game. Of course they can stop sprinting, try to get that last shot off on you, but what if you went around another corner? What if your shields already started recharging? That's one argument.
Though it's problematic in ways, I personally like sprint. It's fun to use, makes map traversal and trick jumping a lot more interesting, and also speeds up gameplay in lots of positive ways.