When I look at accomplished artist's work I realize the time it took to get there plus the start was not via top shelf, top of the line, name brand equipment and materials. My cousins drew on butcher roll paper. My dad brought home scrap paper from a scrap paper store (pre-recyclling centers). Nothing like a clean side of a blank sheet of scrap paper.
The equipment was the same way, but I would have to justify buying the best quality stuff with my proven skills and deep pockets. Now let me hone in. Using a PC to do art in a comfortable way requires a tablet and pen input device. If you are just starting to draw this way and look only at the stuff that accomplished artist use, you will "stifle yourself Edith!"
I am not a school trained or from birth art prodigy. The money I make goes for food, clothes and rent. I do doodle, draw, sketch, etc; and I want to do it on the PC which is affordable. Graphic tablets can be on the cheap end and still do the job. That is allow you to move the cursor with natural hand motions and leave a trail of pixels on the screen. Being able to use hand pressure to mimic a real pencil or pen is great, but if you've ever drawn with a ballpoint or felt-tip pen, the line weight is constant. You don't even have to buy a new graphics tablet. You just need to do it, get into it, get use to it. Then when you can move up in the drawing equipment world, you can.
Spanking brand new, top shelf stuff is fine but used is great. Awkward and unfamiliar stuff test your limits, incites workaround wisdom and inventiveness and work ethnic (I mean ethic). Hey I started drafting with pencils, then pen and ink, then computer aided design (CAD). Even CAD is leaps better now than Cad back in the day.
So, go get a used graphics tablet if you simply need to doodle on the PC and quit vexing your mouse. The fewer bells and whistles the more you have to put yourself into it. Keeps the human touch in art.