People are entitled to have privacy. You should absolutely not have to tell someone everything just because they're family. Though, wanting privacy is a little different from keeping secrets. As others have mentioned in this thread, sometimes keeping things like your orientation a secret is best for your personal safety. It's sadly common for people to be disowned or shunned or even abused by their family for being who they are. If revealing your orientation would put you in such a situation, you should definitely not tell them about it unless you're able to remove yourself from such a toxic situation.
Bottom line, it's not wrong to keep secrets from your family or friends. If the secret is something that would put you in danger of abuse if your family should find out, that's all the more reason to keep the secret. Your personal health and safety always comes first. It especially should not be undermined by closed-minded ideas that you're a bad person for not telling your family everything. Looking out for yourself is very important. You should not put yourself in toxic situations if you don't have to.
If the secret is more harmless, like you have a hobby you don't want to tell others about, then that's fine. Like I said, you aren't obligated to tell your family or friends everything about yourself. Simply not talking about yourself because you like your privacy is also perfectly okay. Some people just enjoy having private lives. It doesn't make them a bad person or dishonest or anything else like that.
Bottom line, it's not wrong to keep secrets from your family or friends. If the secret is something that would put you in danger of abuse if your family should find out, that's all the more reason to keep the secret. Your personal health and safety always comes first. It especially should not be undermined by closed-minded ideas that you're a bad person for not telling your family everything. Looking out for yourself is very important. You should not put yourself in toxic situations if you don't have to.
If the secret is more harmless, like you have a hobby you don't want to tell others about, then that's fine. Like I said, you aren't obligated to tell your family or friends everything about yourself. Simply not talking about yourself because you like your privacy is also perfectly okay. Some people just enjoy having private lives. It doesn't make them a bad person or dishonest or anything else like that.