is long distance relationship wrong?
No. LDR"s are not "wrong" per se, but man, they are very difficult to maintain. The vast majority of them don't pan out in the long run. I have tried twice and both relationships petered-out.
In the first one my gf whom I met when I was in undergrad school moved to California to go to college. And after about a year of emails and phone calls and me flying out there once to see her, she wrote me the dreaded "Dear John" letter.
And the next time I tried an LDR it was ME who met somebody else, which worked out for the best I think because that someone else is now my fiance here in Detroit. She works at the University where I go to school.
But yeah, LDRs are hard. I would say that unless you are married or engaged..let just say the two involved are only "boyfriend and girlfriend" level, that 80% of them do not survive past two years.
Just my own personal wild-ass scientific guess, but IO bet it's pretty accurate.
If it is YOU in a potential LDR, I wish you the best of luck. You will need it, my friend.