Earlier quoted context omitted.
I tend to prefer Wikipedia for movies. The exception is actor headshots if I'm trying to identify someone, which Wikipedia lacks for licensing reasons, but otherwise Wikipedia tends to be better than IMDB for most needs. Wikipedia has an IMDB link on every article anyway. Another need I guess might be reviews, for which RT or MC are better than IMDB: not sure if either of those two will fare better than IMDB in this…
For me, imdb was much better when they had user comments/discussion. I never even posted on it myself, but browsing the discussions one could learn all sorts of trivia, inside info, speculation, etc about each movie. Since they (inexplicably) killed that feature, I rarely even visit anymore. Your right, for many purposes wikipedia is better, especially for TV series episode lists with summaries.
I think they removed it in part because new movies, like star wars and superhero movies, had alot of negative activity.