KDA > Kills
The worst players in the game are the ones who think a 1 for 1 trade is good. Even worse are the ones who trade 1 for 1 either as a low-scaling champion, or against a high-scaling champion.
As a rule of thumb, anything below a 4 KDA is bad. 3 kills and 1 assist per death as a damage dealer, or 3 assists and 1 kill per death as a tank/support is ideal.
Bleeding out Gold for your own selfish gain is how games are lost - especially if you're granting assist gold as well when you decide to 1vX.