Part of what a 4 year college degree shows is that you can stick with something for four years. Combined with some of your other responses, I think it might be a good thing to have under your belt.

Also, depending on the college scene, you might have more opportunities to socialize with lots of people which you may have missed with your home schooling.

Depending on where you live, community college varies from amazingly affordable to right around the same as a state university. Check on student aid as well.

Sometimes you have to jump through the hoops to show you can.