I think when people don't share your passion they have a hard time seeing that the risk is worth it. It does sound like your friends and family are worried about you and that is where their insistance comes from. One idea might be to take a safety course for riding or something to appease those who are worried about you. However, like Kali said, it is your body and your life. I also think it takes some courage to get back up on the bike after two serious accidents. I say, follow your heart. Be safe and heal well.