This message is coming to you via a Sony Vaio Win7 laptop with wireless keyboard, mouse and 20" HDMI monitor. It works just like a desktop. I'll never own another desktop. I can unplug and take this laptop with me.
I have a 15.4" Dell Win10 touchscreen laptop at work. It supports Creo, MS SDK and Labview as well as other demanding applications. It does everything my previous desktop did but I couldn't take my desktop to a meeting or out into the field. I can flip the screen and it acts as a touchscreen tablet. All this for $600. The only downside is it doesn't have an internal DVD/CD drive.