Do I need a second monitor and how to use it?

Question

Monitors

When I had to work with 2 monitors, I kept the IDE on the first one, and the browser on the second one for quick googling of errors. It was quite convenient, I got used to it quickly, but when I returned to one monitor, there was no discomfort. However, sometimes the desire to buy a second rolls. How to understand that a second monitor is really necessary and will increase productivity, and how do you use it? It will be especially interesting to read the opinion of people working in Android Studio. I will not refuse advice on choosing a second monitor. Now AOC I2369V/01 23"

Answer 1

I use two monitors.
Useful in some cases, when, for example, in one window IDE and PussyExe, and in another - Google and porn.
Well, either on one monitor there are logs or Zabbix, and on the other - porn.
In other cases it is useless.