Well, I can kinda see where you're coming from. There are some children characters I kinda dislike:
-Inigo for obvious reasons
-Severa At first, I hated her but now I'm in the middle
-Yarne I found him obnoxious and really ugly
-KJELLE. GRRR SO ANNOYING.
-Gerome. Boring emo dragon dude that dresses up like Batman but instead of being awesome like Batman, he just makes you want to punch him in the face. Or stab him with a lance. Or stabbing him with a lance on fire.
Now for the children I like...
-Lucina. But Males can't become Lucina's father. So it doesn't count ;-;
-Morgan. Duh.
-Owain. He's a bit annoying sometimes but most of the time I like him.
-Nah. Why so much hate on Nah? Is it cuz' the prologue she's in is really annoying? Yeah, Prologue 16 is really frustrating but I still like Nah :P
-Cynthia. What a goofball {XD}
-And Noire. I still think Tharja's creepy though (Stop keeping locks off my avatars hair ~_~)
And for the children I don't care about.
-Laurent and Brady. I've never even got Miriel a spouse so I can't comment on Laurent... But I don't really care about brady.
//sobs
I love Inigo. As son of Ricken, he reminds me of Lavi (D.Gray-man, it's the head). And that is a wonderful thing. His supports with Lucina are absolutely hilarious, and I'm so glad I married the two.
I also like Yarne. I think he's pretty cute. He's not my favourite of the kiddies, but I definitely like him.
I agree on Kjelle, though. |D Nah, is great. :)