:56459286 I agree you can have your reason for using R1, R2 in your opAmp notation (and your "vertical bar" and "circular loop" to denote V and I). 
The problem is ***consistency***: If 90% of the EE guys are using R1, R2, me newbie will definitely follow, otherwise I would not be popular among my friends, colleagues, and most importantly my students, who would have a miserable journey in their EE career.   To assure easy learning curve, I strongly recommend the newbies the following tutorials: https://tunneldiode.blogspot.com/2020/12/temp-draft.html.