you really can teach them that. in fact, it's much easier for homeschooled kids to relate to people in different ages and social spheres because you have time to actually socialize them with people born outside of a six-month window on either side of their birthday. there are an incredible number of resources both in terms of physical meetups, online classes, public schools who allow kids to show up for sports or difficult to teach subjects (like foreign language) - it's really an incredibly rich experience to homeschool these days and socialization is often only a challenge for those who don't WANT to socialize - particularly the very religously austere homeschoolers. but that's less and less the average homeschooler these days.