It's all about the specs isn't it? There are only a few instances where 32GB of ram is going to be a must, with a Mac, whereas Windows will eat up as much as you can throw at it. And you're suggesting a touchscreen is a benefit? So explain how you can efficiently work, typing on the keyboard and using the trackpad (or mouse), then shift to touch the screen?
Are your fingers 10" long? That's about how long they'd need to be to touch the top of the screen while keeping your hands on the keyboard / wrist rest. I'm guessing you don't have 10" long fingers, so you're then saying that lifting your arms and hands to touch the screen - not just touch, but interact with the screen is easy and efficient and something you could do for 8-10 hours a day?
If you're actually working...for a living, the whole touchscreen concept, for a desktop or laptop, makes no sense and is absolutely not something anyone could do day to day [and be efficient in their jobs]. Not with a laptop or any of the typical desktop screens. Microsoft's new drafting table style desktop does alleviate some of the human-to-screen touch interface issue, but brings up a slightly different issue of having to lean over the screen like you're drawing / writing on a drafting table.
There is a reason, lots of them, why Apple has not bothered with touchscreen laptops or desktops and hopefully they never will.