This isn’t for everybody so I will, hopefully, keep this short in case it doesn’t matter to you.
ChatGPT has an, easy to miss, option to have temporary chats.
What that means is that your chat will not use memory and will not be saved in your chat history.
To start a temporary chat, click on the icon in the upper-right corner
You’ll know that you are in a temporary chat because the “Where should we begin” that is normally in the middle of the screen, will be changed to "Temporary Chat" -
Here are a few reasons that make sense to me
There are likely other reasons but I’ll walk away here.