Most of my firewall knowledge is from decades ago when all a firewall ever did for me was slow things down and get in my way. Could have been for my own protection, but still was a pain. Even now I find that simple adblockers will get in the way and need to have lines added to a whitelist even when using regular websites and apps.
What does the firewall world look like right now? Will my family be asking why the internet isn't working properly if I decide to install a firewall?
What does the firewall world look like right now? Will my family be asking why the internet isn't working properly if I decide to install a firewall?