I would never ever live with a crippled OS called IOS when I can have a fully functioning computer for the same price. The price as well as the dimensions of an iPad Pro with its keyboard and pen is pretty much the same for a similarly specced MacBook, which runs macOS, can run virtualization software, and even Windows if you want. Whereas the iPad Pro is just a big iPad with pen support.
To each his own.
$1269 for a 256GB 12.9" iPad Pro with the Smart Keyboard and Apple Pencil (lol autocorrect capitalizes those) vs $1,499 for a base 13.3" MacBook Pro. Though I'd really compare it to the $1,799 MacBook Pro model since the $1,499 model isn't perfectly lag-free.