I fully intended to play with my legacy character. I have all jobs at 50 except Culinarian which is 46. I did not "powerlevel" or cheat in version 1.0 and worked damn hard to get my levels up over 2 years.
At the start of Beta 4, I could not access JP servers (where my legacy character was - Masamune) so I started a new character on Ultros.
Loved the game so much that I decided to play it as I think it was intended, from the start to experience it all with fresh eyes and a new community who are not jaded like the legacy community is.
I suspect I will still logon to my legacy character now and then and will probably play both but my main will be my new character.