The contact area of the terminals on the wires is much higher if you use the screws rather than the dinky little spring prongs in the stabby-holes. A small contact area means more heat is produced at the junction, which leads to premature failure, which leads to annoyance, which leads to the dark side.
The contact area of the terminals on the wires is much higher if you use the screws rather than the dinky little spring prongs in the stabby-holes. A small contact area means more heat is produced at the junction, which leads to premature failure, which leads to annoyance, which leads to the dark side.
The only outlet I witnessed fail due to heat was backstabbed.