Because that's what keeps people playing and coming back for more. Without the rank going up and down the rank is pointless. It's awesome.

Okay but do you have any advice as to how to win them with  my team mates? Especially if you're stuck with sucky ones?

I am seriously having trouble winning them. Every time I am pitted in a team, my team mates always gets easily destroyed. I'm starting to think that It's not worth trying to get an A+ (current max rank) for the Ranked battles. I mean, every time I get pitted in a team with other random players they always lose. And I'm almost going back to where I started when Ranked matches first launched for Splatoon in terms of my rank. It's like no matter what i do I always lose points in those matches because of my sucky team mates. I was at a good rank and now I'm almost back to be a C Rank because I face loss after loss. I hope Nintendo makes it so you KEEP the points you earn in the ranked matches like in the regular matches when the update comes. It's making it a bit hard and frustrating to get max rank. Is there a better method for winning them? Becuase I this point I might just quit the ranked battles and just stick to my B rank status :/

Hey guys, I know it's been a while since I last came on here. But now that Sonic Boom's been out and everyone's gotten a chance to play it. What do you guys think of the game?