Average none, though 2.5 Gbps is getting more and more common and WiFi is catching up too. You could max out multiple slower devices at the same time without hitting the limit of your uplink. I don’t have a use case for that, so I’d only upgrade from my current 1 Gbps to higher speeds if the price is comparable. That doesn’t mean that others don’t have a use case for it.
It’s Markdown syntax. You can actually format it nicely in a code block:
bool isEven( long long x ) { if ( x < 0 ) x = -x; if ( x == 1 ) return false; if ( x == 2 ) return true; return isEven( x - 2 ); }
You do that by adding ``` above and below it. To force single line breaks, you can terminate your sentences with two spaces, or a backslash.