Sometimes, we prefer to do things on our own, even if we have a family. Especially for things that are more important to us, we don't want to involve others. We assume that for certain things that we believe we can handle independently, why not do it alone? Especially when we have some issues and need a comfortable environment to find solutions to various problems. So, it's okay to do some things on our own. Sometimes, we just need time and space to think and resolve problems in a comfortable way.