As someone who is also an alt-a-holic. I can say that it's definitely nice fiddling with multiple characters and having multiple races. Staring at the same character for long periods of time does get very annoying and makes me want to fantasia over-and-over. With alts I can just swap between different characters and get a different feeling. Most FCs generally don't care. Some will have a rank specifically for alts, and some just keep you the same rank you have on your main. Never really seen an FC too bothered by it.