Love Child

A child born of unwed parents.

Whereas the alternative kind is a...what?...IndiferenceChild? All too often it is.

Sex is hereditary. If your parents never had it, chances are you won't either.

Also used to refer to two systems/ideas merged together.

Rumour has it that the AppleLisa was named such after SteveJobs' LoveChild -- MatthewTheobalds