I tend to agree with you. By the time I was 18 I was out of the house and successfully on my own. My own two kids are now grown and one struggled for a little bit but has since joined the Navy and is doing quite well. The other is finishing his last semester at a community college and then will be off to UC Davis. I can't imagine my kids being ready for adulthood if I had limited their freedom to make decisions to such an extent that they couldn't even use Facebook until they were 17.