1. You're brutally honest about our fashion sense (more like fashion nonsense, amiright?). Face it: Moms and girlfriends are pretty biased (hopefully), so we're left to our lady friends to find out for sure if our new haircut looks stupid or if we can pull off that sweater we got for Christmas. Female friends aren't sleeping with us and they don't have to be proud of us always, so your opinion will always be honest.
2. You can screen potential girlfriends. Women speak an entirely different language to each other, from what I understand. It's full of subtle comments and underhanded snarkiness. You might think the girl you're about to go on a third date with is great, but your women friends will be able to tell you she's a stuck-up bitch months before it would ever dawn on you.
3. You can advise us when we're in a jam with our lady love. If you're a guy and you've just said something irrevocably stupid to a woman you're dating, your best bet is to just shut up and pretend you're asleep. Or, you can go to your female friends and get legitimate advice on how to dig yourself out of that hole. Your guy friends are just going to say, "Chicks, man." But kindred ladyfolk will tell you what she needs to hear.
4. It gives us the chance to see The Fault in Our Stars. It's not like guys are secretly hoping you'll invite us to a sleepover and paint our toenails. But getting dragged to a rom-com isn't always the worst experience in the world. (Sometimes it is though.)
5. We don't have to be a dudebro all the time. Sometimes it's nice not to have to worry about the guy code or posting up or acting macho. Sometimes we just want to let our guard down a bit and talk about how tough it is to date.
6. You can call us out when we're being an ass. Guys can be assholes. Guys can be giant assholes in groups. Sometimes hanging out with women is a bit of a refresher on how to act like a human being whoisn't a complete dickwad.
7. We get to experience foods we would never eat with other men. It's not like another guy would ever be like, "Bro, we gotta go to the new cupcake shop downtown. Their shit is so decadentttt." Replace "cupcake" with "kale" or "couscous," and it's pretty much the same thing. There is a whole world of food out there we don't care about eating.
8. We now know who Beyoncé is. Thanks to female friends, we can at least kind of sing along when someone else jokingly signs us up for "Single Ladies" at karaoke.
9. We started watching Broad City because of you. We would've assumed it was just another Two Broke Girls otherwise. Thank god you talked us out of that mistake.
10. You keep us from being hermits. If it weren't for our lady friends, guys would spend 23 hours a day in front of the TV or computer frantically hitting buttons and trying to kill people. You make plans and make us show up to your goddamn picnic. And we love it.