If you need a personal assistant for your day to day life due to how much you're working, consider the idea that perhaps you're working too much.
CEO or not, no one needs to let their work consume their life.
It's your job to set an example for the rest of the team. Others might see how much you're working and assume that they need to, too. I've seen it happen a few times.
EDIT: Sorry, I failed to mention, my comment is in response to "personal tasks first and foremost." Having someone arrange meetings is a perfect business use case.
CEO or not, no one needs to let their work consume their life.
It's your job to set an example for the rest of the team. Others might see how much you're working and assume that they need to, too. I've seen it happen a few times.
EDIT: Sorry, I failed to mention, my comment is in response to "personal tasks first and foremost." Having someone arrange meetings is a perfect business use case.