Long-distance relationships suck. You may eventually discover some positive aspects, but on your "bad days" you will curse each mile separating you. Yet, if you ask me, "Is it actually worth to get into LDR?" Absolutely. Every. Single. Minute.
Science aside, my husband and I both agree that the year and a half of long distance did the most to strengthen our relationship. When we had to work for it (Skype, email, video messages, etc), we treasured what the other person said more.
When things get tough, I'll panic and dig through the vault of reasons why we shouldn't be together. All the doubts and negativity manifested in my head, the silly notions that he secretly wants to get back with his ex, or I'm better off alone, leave my heart shattered
What is hard is when you come home from seeing them off. When you come into your room that still smells like them, and you see little shadows of where they've been in your house, like the way they placed a certain object before they left, or the towel they'd been using after they showered.