In my experience, it's true that kids have more time to socialize when homeschooled. It can, however, be harder to find kids to play with if you don't make an effort. Joining a good homeschoolers' association helps, since they're free when you are--in the middle of the day.
And it is definitely much higher quality socializing that takes place outside the traditional school building. No waiting in line, no bullying, no being shushed when they meet someone they like and want to talk to...All good things!
