Asklemmy

I feel like you are approaching this wrong. You buy a laptop so you can be mobile. This is good if you travel or even just in an office where you might have to switch rooms (e.g. a meeting room). If you don't need to be mobile, then you don't need a laptop.

Some applications will restrict you to using a PC, gaming for example, or anything that needs a big GPU. In this case you don't have a choice.

If you get a laptop, please, buy some peripherals. Get a docking station, a proper screen, a good keyboard and mouse. Pay attention to ergonomics. Dont give yourself RSI or back pain.

I used to use desktop computers both at work and at home (and laptops only when away), but that killed my back – too much sitting. Since then at home I use only laptop – I can lay down with that. I do hate touchpads too, so I don't use that – just a regular mouse. Yes, one can connect a mouse to a laptop. ;-) I would prefer a full keyboard, but the one on laptop is not too bad.

Recently I have bought a powerful PC for gaming, but I only use it remotely, from my laptop (Steam streaming is great).

Right now a PC but I may need a laptop in the next 2 years

In regards to focus and typing speed, laptops seem to do it best for me. My laptop is usually in sleep, and my desktop off, so it's much faster to bring it from sleep and do what I need to do. A laptop, too, was my first computer, so I feel fairly comfortable with the experience unless I really need a mouse. Desktops are insanely comfortable, though, and I guess primarily that's what I'd use, but thankfully I can do about equal things on both outside of gaming, so it's mainly about how I'm feeling at the time.