What would you never share with anyone?

As much as possible i don't want to share my room. This is my sanctuary and i can think well when using the computer here in my room when i'm all alone. Plus i value my privacy so much so i need some space alone. If you want to add another one, i don't want to share my toothbrush because it would be kissing them and more. I also don't want to share my underwear because i might get diseases.

I would not share my clothes just like you but also would not share my online earnings, it takes alot of time to make this money so why should i, i do make a few Purchases online but not all the time and do not like to spend this money, thanks