Everyone has preferences on who they like to use..
Cloud because well he is Cloud
Cid.. because he is that cool guy
Barret because he pity's the fool
Tifa cuz boobs
so on and so on

My main 3 were Cloud, Cid, and Vincent.. I was young when i played it so of course only men could save the world lol.. haven't had the time to go through it again and figure out who I would use now

So who did you use and why?