I would probably suggest what PrettyWings did - if you can, simply wait couple of weeks, Apple might be announcing updated Macbook Pro's(tho, expect them to be more expensive than current 13" MBP/MBA) and they also are expected/rumored to announce some upgrades for iOS for iPad Pro's to benefit from all that raw M1 power.
If you dont care about either, then everything else about it has been laid out to you less or more precisely in above posts by other members.
Personally, my sole personal computing device for almost two years was iPad Pro 10.5(I do, however, have Windows desktop PC at work with dual monitors), it was great, I loved it. Now the upgrade time came and Im waiting for 12.9 M1 order to be fulfilled.
However, I do know, that in year or two there will be also either one of the 14-15" rumored Macbook Pro or Air, depending on port selection and price or maybe upgraded Mac Mini or even iMac in my posession.
Even if they enhance iOS multi tasking and file support to the same level as desktop OS'es do and even allow MAC apps on it, theres still place for laptops/ desktops with their bigger displays, considerably longer battery life(laptops) and added keyboard(laptops).
It was really hard to resist the urge to get 16GB Macbook Air when they released them, no fan, long battery life, what is there not to love about such computer lol!
Now, pardon my grammar/style, too lazy to reformat all this