> My last 3 laptops had been Mac's (a White Macbook, then a Macbook Pro from 2010, then a Retina Macbook Pro from these days...) and while I feel 'satisfied' I also kind of noticed that performance is always worse, and somehow the morethe more I upgrade, the more I feel like a pain the ass when I use that computer.

Are you using SSD or normal HDD?