Installing erpnext on virtual env

Hi everyone, I want to install erpnext on virtual environment on ubuntu 20.04. I saw on the internet for every website that tells me how to install it that we need to create a new user for erpnext. I got a question why should I create a new user for erpnext and find that if there’s something wrong with erpnext it doesn’t effect the entire system. So, since I use virtual environment and it is a isolation environment for erpnext. Can I skip creating a new user or is there a hidden problem when I do that?