When do I have to upgrade my pc in how many years?

My system: Graphics card: Asus Dual RX 580 8GB

Processor: i7 4790

RAM: Kingston HyperX DDR3 1600 C10 2x8GB

Hard disks / SSDS: 120 gb san disk ssd plus, Seagate Barracuda 7200.14 1TB

Mainboard: MSI H81M-E33 (MS-7817)

Power supply: Seasonic Focus 550 Watt 80 Plus Gold Full Modular

Housing: Thermaltake

Monitor: AOC Gaming C24G1 144hz, 2.Monitor Benq Gl2760H 27 inch 60HZ
Webcam: Logitech C920 1080p autofocus

Input Devices:

Keyboard: Logitech G910

Mouse: Logitech G502

Headset: Logitech g430

Xbox One S controller

Boxes: Logitech Z333 2.1 stereo speakers

Usually an "upgrade" is not worth it and just buying it because it is 4 years old would also be nonsense.

As long as the PC does what you expect it to do, everything is fine.

Ok thanks what do you think, how long will my PC continue to create current games?

Still going on, but the SSD is very small.

Ok, how many years will it take before current games stop running on my system?

For 1080p, that's still 1-2 years.

It's good. Then my pc would have been worth it.

I mean then of course my PC would have been worth it.

I understood that too. Have fun.

3 years certainly but slower because not all will fit on the SSD.

The cpu fits a 2060 super for relatively low settings and high frames

so the graphics card.

an hdd is also not up to date in a gaming computer

There's still 1 - 2 years to go.