Your children should be able to remind you of you and their mother. At best you should wonder "maybe he even looks like my ancestors back in the shire surviving the dark ages. Aye good life." Take a gentle mix like sean lennon. Just barely looks like John but the asian half doesnt look like Yoko persay, just kinda asian. But he at least resembles his dad a little. I have seen kids that bear no resemblance at all to anyone except other mixed race kids!!