To be honest,I don't ship it like crazy.I'm willing to ship it,but I don't ship it.I think this ship mainly started when Yukino was kicked out of the guild,and rogue was the only one who cared for her at the time,but wouldn't that make Natsu x Yukino valid too.Because he wanted to kill Jenma(Jemma,Jenna I don't know) because of Yukino?But for some reason,I see this ship as more of a Brotp instead of a OTP so...yeah.