The whole idea of using stationery to write instead of typing away at a computer is incredibly more friction-filled and not really environmentally sound. Forgetting about the ecological consequences of using finite resources to scratch away at paper, I tend to regulate what pens I use with an aversion to the friction that ensues with their continued usage. Thus this is my philosophy of stationery purchasing:
The disposable pen is the cheapest and most ubiquitous form of modern writing utensil. Should we hierarchically organise a list of these from most friction-filled to least when it comes to refilling them, pens that follow the Bic Cristal model of disposability find themselves at the bottom of the list. Pens with "refills" readily available such as the Pentel Energel or the ubiquitous Parker Jotter rank themselves above them, but ultimately fail to be actually eco-friendly. The refills themselves are made of plastic or metal and must be thrown away once their ink is finished. Making distinctions between pens with refills, the proprietary variety is infinitely less appealing than the international standard. If an expensive pen needs a specific refill that is only made by a single company, should that company go belly-up, you're left with a useless cylinder. In addition to the fact that these pens are inherently on a timer from the day you buy them, there is also the caveat of a lack of user agency when it comes to picking and choosing refills - what inks you have access to. A pedantic drawback but a drawback nevertheless.
So the gold standard for stationery in my eyes is of course, the fountain pen (though I may as well include rollerballs that utilise fountain pen inks in this category). The fountain pen s a utensil in a vacuum. The fate of the company that makes it is of little consequence as the wealth of ink manufacturers means there is a near unlimited variety of inks on the market. Inks can be easily mixed to make your own bespoke shade and swappable nibs in some pens make them the antidote to the inevitable obsolescence of the ballpoint.