I believe they may hr looking for a more human interaction while being online.
maybe because they didn't know how to do a google search or they weren't satisfied with their search results online ...or both
IDK but you nailed the reason why I answer more than I ask
I think it's nice to get first hand opinions from people.
For example: favorite types of alcoholic beverages, people mention ones that I've never heard of and that I would never search for but I've made notes to try some that people have mentioned.
Perhaps they like the interaction they get from asking people instead of just reading the dry facts.
reading nothing but facts can get borring. having someone tell them in words they can understand is better