If I played more than just TS4 as far as games go, I'd consider getting a nice gaming desktop computer, but since this is the only game I play, I just play on my laptop. I recently got a new laptop though (In November, I upgraded from a 2015 Macbook Pro to a 2020 Macbook Pro) and I can play with almost all my settings on ultra and even with a lot of CC in my game, it runs pretty smoothly most days, so in the end, I'm very satisfied with my playing experience. I know not all laptops can support the game nicely though, so I am glad that the computer I wanted anyway ends up running the game pretty nicely for me as well.
I need a portable computer to do my digital art, since I often need to bring my work with me, which is why I need a laptop to be my main computer rather than a desktop.