We use it for firewalling. Lately, we are also using it for remote access or VPN access for the users to the firewall and then onto the local network for people working from home. We've seen a huge jump in work from home. Everybody is working from home, so we need a secure connection to the office.
I am not using its latest version. I normally wait for a couple of months before upgrading the unit to make sure there are no bugs or issues. I check on the forums to see what other people are saying and whether there are any issues.