Having it all

So I have a question for everyone...why is it people feel they can't have it all?
O:k now I'll tell you why I'm asking such a question. A friend of mine is going through this back and worth thing between his wanting and working so hard for his career and his girlfriend wanting him to stay close and such. Now I'll fully admit I'm not her biggest fan in the first place and the idea that she could be holding him back from his dream career only makes that worse. On the other hand he loves her so I have to respect that. What I don't get is why she can't let him at least try to balance. If she makes him happy then fine, but i dont my friend to throw away a great chance at going pro for her. It's not the first time I've seen this either. I had someone I was very close to on the team a few years ago, he was like a brother to me and I loved his girlfriend but everyone knew she was holding him back. Thankfully they worked it out and she let him go a little and he learned that balance is the key. He got himself drafted and now plays pro hockey in the States. Today they aren't together anymore but they remained friends...either way I watched for at least a year or 2 how this effected his game. For those who aren't close to major junior hockey like I am it may be hard to understand why this is an issue at all. People have careers and families all the time, right? Hockey players though are tough creatures....they work for years trying to crack lineups and play at a higher level. If you're good enough plus a little luck you usually end up leaving home at about 16 to live with a billet family in other city. You live and breathe hockey. Life for a teen playing a level such as major junior is different then regular teens. Canada is great in the way that coaches and training stuff help build an awesome support system to help the players live somewhat normal teen lives. They all attend school and with a group of friends that reaches even further then the 23 boys on the roster, they plently of time hanging out with friends and partying. It can be very intense though and unfair even but the strong ones and the talented ones have that small chance of making a career out of the game they love. For the majority even when you dont go pro it's all worth it in the end. Hockey players are a different breed. I worry that a high school girlfriend who isnt supportive could ruin it for a guy like my buddy. I know he's a big boy and can make his own decesions but this was all bothering me and I wanted to get it out. For obvious reasons I cant say anything to him, i know its not my place. Honestly I think he'll find a way to stay focused....or at least I hope so.