I totally get that! Let me understand you better though: you would technically use a controller? Because the whole loot story aside: you can use a controller on PC, idk if you knew that and ofc idk if that helps in any regard.
Now to the topic: I can not relate to your situation, which is why I can simply not understand, how you feel. So I will not even try to pretend, that I could imagine how frustrating it must be, that in a lot of games, no care is taken for accessibility.
That being said, I am all in for accessibility in modern games. I am not in though, to change the rules of an old game afterwards. Without wanting to be cold hearted, but you also can’t expect, soccer to change rules for people, who can’t run as fast, right? But sure, coming up with a new sport, you can design it, such that also people with a subset of disabilities has no disadvantage.
Now in D2, the looting system is one of these rules. A lot of people think, this merciless system is just old and flawed, but in fact it does serve a specific purpose:
For grinding exp, for going through hell, for doing ubers with most builds, you get advantages from playing in a party
Problem: in a party, you can leech all of that. You can literally join a 7 players game and just stand aside, to let the others do the work.
Now shared loot makes sure, that you can’t do that to get your gear. To efficiently farm gear, you have to play solo (or with friends). Personally, I am going to just do a ton of Mephisto runs, to acquire gear.
Even though, I could try to compete with 7 players for good gear in shared loot, I won’t. Even if you have no disadvantage, it is a very bad decision to try to hunt good gear against 7 people.