No aversion per se - while I like clean unmarked checklists for my series sets, I don’t shun marked checklists as miscellaneous keeper material. I like them for the little stories they tell - they were in some kid’s hands back in the day, and he or she was collecting and keeping track just like we were. Interestingly, most of the ones I’ve come across only have a few titles checked, suggesting that most kids were in the same boat I was - struggling to scrape together some change to buy them and/or find sellers who weren’t constantly out of stock. Also, most I’ve seen are from early Series, primarily 3, 4 and 5, which also makes sense - the height of the craze.
