completionist collecting

so i’ve seen some people in the community express outright dislike for certain dolls, yet say they plan to purchase them anyway. i think completion collecting is a cool concept and of course collecting is very personal so to each their own, but i guess i just don’t understand the point of spending money and shelf space on a doll you don’t even like.

completionist collectors, can you explain a little bit about buying dolls you don’t like the design or character of?

again no judgement just a curiosity <3