We homeschooled for kindergarten last year! Absolutely loved it. This year we decided to go with a virtual school - basically public school but at home. I'm really excited about it. We start next Wed and dh is upstairs right now getting the school room ready for this year. Need to make room for the new books and computer!
Re socialization, there have been studies done on this - and actually homeschooled kids can learn fantastic socialization skills. It's easier for them to deal with people of all ages rather than being used to just their peers. It's been fun watching my 5 yo walk up to an adult and start a conversation - and then lead a toddler in some activity.
We also regularly enroll him in art classes and classes at the Discovery Ctr - plus this virtual school has field trips. It's so much fun getting to experience all of this with him!