In a professional setting, about 5 years. Just various office work, nothing to intense.

In personal life, currently 17 years. Lenovo T400 still rocking on. Beyond SOME web browsing there just isn't anything yet that heavy that demands anything more than this thing.

Software Engineer, use it partially for private and professional purposes. In historical Order: Thinkpad X201, Then a Thinkpad T450s, currently a Macbook Air M2, usually in the biggest configuration. Usually I use it about 7 years. Not because it doesn't work anymore, but because it gets too slow for what I am doing with it. In one case it was the switch from C++/C# to Rust and the compile times became unbearable. The next switch might be because of LLMs.

0. Engineering Manager, but I still write code.

1. I don't. I have a Mac Mini. I don't quite understand why people have laptops at home if they always use it in the same place. I spent years getting my office setup to be great so I don't need a computer I can move around.

2. Mostly dependent on what shiny new Mini is available. I had an 8GB M1 for 5 years, then moved to an 24GB M4 Pro last year because local AI looked fun. I'll probably upgrade to an M5 later this year because there are tangible improvements in the hardware.