It's hard to really say if long distance relationships work out or not. Honestly, what you put into it is what you're going to get out. Each relationship is different so you cannot judge one long distance relationship based off of how another is going, or any relationship for that matter.
The hardest part of being in a long distance relationship is hardly being able to see each other, however it makes the time you do spend together most cherished. My boyfriend and I are four hours away from each other, we see each other about once a month: either he comes to me or I go to him. If we're lucky, like this month, I had formal for my sorority so he came down this past weekend and next weekend he's visiting again. However, next month since he has finals one week and the following week I have finals, it's going to be harder to see him.
We definitely would not be where we are today without technology, we text and Snapchat all day, everyday. To some people that may seem excessive, but to those of you in long distance relationships you understand how especially important it is to talk to your significant other throughout the day or at least once a day. You know the importance of keeping in touch, that if you don't, the relationship may fade away. In my view, there's is no point in getting into a relationship with someone if you don't see a future with that person.
The best part about being in a relationship is you always have someone who is there for you. Yes, majority of young adults' parents are there for them but a significant other is different: they are someone you could possibly build a future with. Someone there to be your best friend and do everything with. They're there to support you and help you achieve your goals while achieving theirs. Yeah, sometimes you don't agree with what they say, but would you really want to date someone who is exactly like you?