The computer I use the most is

2012:
Depends on where I am. If at work, I'm using my XP Windows with 2 big monitors. At home, I use my iMac. I hardly make use of my laptop. Only if I'm downstairs watching TV or something which is very rare or when I work from home.

2013:
Win 7 at work and iMac at home. I hardly spend time downstairs now, so I don't need to use laptop for that purpose (or I use iPad in that case). If I'm working from home, I use Win XP laptop.  That's the only use my laptop gets.

2018:
HP Windows laptop at work. I hardly use computer at home anymore. Mostly phone and iPad. When I go for senior care jobs or at mom's home, I do take my Macbook Air with me. But even then, I hardly ever open it. I do want to get back to scrapbooking, hopefully, I'll get back to it soon!