One of the first things that people get wrong about LDRs is how difficult it is to communicate. I have one word for this: poppycock! Technology has never favored the LDR to anywhere near the same extent as in the present day.
With email, social media, reasonable international telephone charges, webcams, etc., there’s no difference in the amount you can communicate with a loved one, whether living in the same house, at the other side of the country, or on a different continent. Snail mail is well and truly a thing of the past.
The doom mongers will have it said that your relationship across borders won’t work out because you won’t share your day-to-day lives in the same way that normal couples do. However, if you think about it, it’s hard to work out what their argument actually is.
All of those shared bills, shopping, childcare, and daily tasks get carved up and doled out, so that you eventually end up spending more than you normally would to survive in the real world. At least with a long distance relationship, you preserve your independence, as well as your financial security.