I have a shitty old Linksys router that acts as a wireless connection for our whole flat. It often crashes when it gets too busy.
I umed an ahed about it for months because if something went wrong then we would be disconnected from the internet. Which would not only be a personal tragedy but also would mean I had to have actual real life conversations with my flatmates. More than likely conversations about why I broke the internet. And how I work in IT so I should be able to fix it.
Today I build up the courage to make the firmware upgrade and it took about 2 minutes.
If you have a Linksys router that is causing you problems then I fully recommend upgrading to Tomato.