At what point does an Al assistant become too personal?

I've been using Al agents a lot lately, and honestly I’m kinda loving it. They help me write emails, booking tickets and reminder stuff. Just like real assistant. But there's one thing I find kind of funny. Sometimes I'm just sitting at my computer writing down random thoughts or journaling a little, and I suddenly get this weird feeling like wait, does my Al know I'm doing this? Which is kind of ridiculous because I know it's not a person sitting there watching me. But somehow it still feels it’s keeping its eyes on me and what I write down. I’m like is my information really staying between me and my assistant, or is some part of it making a trip back to some server somewhere? I'm not saying I don't trust Al. I actually love using it and it's probably one of the most useful tools I've had in years. I just think it's interesting that the better these assistants get, the more they start to feel like someone who knows a little too much about you.